Zone Forecast Product
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
433 FPUS53 KLOT 211904 ZFPLOT Zone Forecast Product National Weather Service Chicago/Romeoville, IL 204 PM CDT Sat Jun 21 2025 ILZ104-221015- Central Cook- Including the cities of Chicago, Cicero, Oak Lawn, Oak Park, and La Grange 204 PM CDT Sat Jun 21 2025 ...EXTREME HEAT WARNING IN EFFECT UNTIL MIDNIGHT CDT MONDAY NIGHT... .TONIGHT...Clear, breezy. Very warm and humid. Lows in the upper 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to 10 to 15 mph after midnight. Heat index values up to 101 early in the evening. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph, increasing to 15 to 20 mph in the afternoon. Gusts up to 30 mph. Heat index values up to 106. .SUNDAY NIGHT...Clear. Continued very warm and humid with lows in the upper 70s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening. Heat index values up to 100 early in the evening. .MONDAY...Sunny. Continued hot and humid with highs in the upper 90s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the afternoon. Heat index values up to 103. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the upper 70s. Southwest winds 10 to 15 mph, diminishing to 5 to 10 mph after midnight. Chance of precipitation 30 percent. .TUESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s inland, but only in the lower 80s near the lake. Temperature falling into the lower 80s in the afternoon. Chance of precipitation 50 percent. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 40 percent. .WEDNESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs around 90 inland, but only in the lower 80s near the lake. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 50 percent. .THURSDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. .THURSDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of precipitation 50 percent. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 40 percent. $$ ILZ103-221015- Northern Cook- Including the cities of Evanston, Des Plaines, Schaumburg, Palatine, and Northbrook 204 PM CDT Sat Jun 21 2025 ...EXTREME HEAT WARNING IN EFFECT UNTIL MIDNIGHT CDT MONDAY NIGHT... .TONIGHT...Clear, breezy. Very warm and humid. Lows in the upper 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to 10 to 15 mph after midnight. Heat index values up to 102 early in the evening. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph, increasing to 15 to 20 mph in the afternoon. Gusts up to 30 mph. Heat index values up to 106. .SUNDAY NIGHT...Clear. Continued very warm and humid with lows in the upper 70s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening. Heat index values up to 101 early in the evening. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 102. .MONDAY NIGHT...Clear early in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Lows in the mid 70s. Southwest winds 10 to 15 mph, diminishing to around 5 mph after midnight. Chance of precipitation 30 percent. .TUESDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers and thunderstorms. Highs around 90 inland, but only in the upper 70s near the lake. Temperature falling into the lower 80s in the afternoon. Chance of precipitation 50 percent. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 40 percent. .WEDNESDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers and thunderstorms. Highs in the upper 80s inland, but only around 80 near the lake. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of precipitation 50 percent. .THURSDAY...Partly cloudy with a chance of showers and thunderstorms. Highs around 90. Chance of precipitation 50 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 50 percent. .FRIDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Partly cloudy in the evening, then mostly cloudy with a chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of precipitation 30 percent. .SATURDAY...Mostly cloudy with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 40 percent. $$ ILZ105-221015- Southern Cook- Including the cities of Calumet City, Oak Forest, Lemont, Orland Park, and Park Forest 204 PM CDT Sat Jun 21 2025 ...EXTREME HEAT WARNING IN EFFECT UNTIL MIDNIGHT CDT MONDAY NIGHT... .TONIGHT...Clear, breezy. Very warm and humid. Lows in the upper 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to 10 to 15 mph after midnight. Heat index values up to 101 early in the evening. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph, increasing to 15 to 20 mph in the afternoon. Gusts up to 30 mph. Heat index values up to 106. .SUNDAY NIGHT...Clear. Continued very warm and humid with lows in the upper 70s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph. Heat index values up to 103. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of showers and thunderstorms. Lows in the mid 70s. Southwest winds 10 to 15 mph, diminishing to 5 to 10 mph after midnight. Chance of precipitation 20 percent. .TUESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Temperature falling into the mid 80s in the afternoon. Chance of precipitation 50 percent. Heat index values up to 100. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 40 percent. .WEDNESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 40 percent. .THURSDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. .THURSDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of precipitation 50 percent. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 40 percent. $$ ILZ006-221015- Lake IL- Including the cities of Waukegan, Buffalo Grove, Mundelein, and Gurnee 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear, breezy. Warm and humid. Lows in the upper 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to 10 to 15 mph after midnight. Heat index values up to 101 early in the evening. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph, increasing to 15 to 20 mph in the afternoon. Gusts up to 30 mph. Heat index values up to 105. .SUNDAY NIGHT...Clear. Continued warm and humid with lows in the upper 70s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening. Heat index values up to 100 early in the evening. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 102. .MONDAY NIGHT...Mostly clear early in the evening, then becoming partly cloudy in the late evening and early morning, then becoming mostly cloudy late. A chance of showers and thunderstorms. Lows in the mid 70s. Southwest winds 10 to 15 mph, diminishing to around 5 mph after midnight. Chance of precipitation 40 percent. .TUESDAY...Mostly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s inland, but only in the upper 70s near the lake. Chance of precipitation 50 percent. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 40 percent. .WEDNESDAY...Mostly cloudy with a chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Highs in the mid 80s inland, but only in the upper 70s near the lake. Chance of precipitation 60 percent. .WEDNESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 50 percent. .THURSDAY...Partly cloudy with a chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Highs in the upper 80s. Chance of precipitation 60 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 50 percent. .FRIDAY...Mostly cloudy with a chance of showers and thunderstorms. Highs in the lower 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of precipitation 30 percent. .SATURDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 40 percent. $$ ILZ005-221015- McHenry- Including the cities of Crystal Lake, Algonquin, McHenry, and Woodstock 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear, breezy. Warm and humid. Lows in the upper 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to 10 to 15 mph after midnight. Heat index values up to 101 early in the evening. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the lower 90s. Southwest winds 15 to 20 mph with gusts up to 30 mph. Heat index values up to 106. .SUNDAY NIGHT...Clear. Continued warm and humid with lows in the mid 70s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 103. .MONDAY NIGHT...Mostly clear early in the evening, then becoming partly cloudy in the late evening and early morning, then becoming mostly cloudy late. A chance of showers and thunderstorms. Lows in the lower 70s. Southwest winds 10 to 15 mph, diminishing to around 5 mph after midnight. Chance of precipitation 40 percent. .TUESDAY...Mostly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 50 percent. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 40 percent. .WEDNESDAY...Mostly cloudy with a chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Highs in the upper 80s. Chance of precipitation 60 percent. .WEDNESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 50 percent. .THURSDAY...Partly cloudy with a chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Highs in the upper 80s. Chance of precipitation 60 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 50 percent. .FRIDAY...Mostly cloudy with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of precipitation 30 percent. .SATURDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 40 percent. $$ ILZ012-221015- Kane- Including the cities of Aurora and Elgin 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear, breezy. Warm and humid. Lows in the upper 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to 10 to 15 mph after midnight. Heat index values up to 101 early in the evening. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the mid 90s. Southwest winds 15 to 20 mph with gusts up to 30 mph. Heat index values up to 106. .SUNDAY NIGHT...Clear, breezy. Continued warm and humid with lows in the mid 70s. South winds 15 to 20 mph with gusts up to 30 mph, becoming southwest 10 to 15 mph after midnight. Heat index values up to 100 early in the evening. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 15 to 20 mph with gusts up to 25 mph. Heat index values up to 103. .MONDAY NIGHT...Mostly clear early in the evening, then becoming partly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the mid 70s. Southwest winds 10 to 15 mph, diminishing to 5 to 10 mph after midnight. Chance of precipitation 30 percent. .TUESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. Heat index values up to 100. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 40 percent. .WEDNESDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers and thunderstorms. Highs around 90. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Lows around 70. Chance of precipitation 50 percent. .THURSDAY...Partly cloudy with a chance of showers and thunderstorms. Highs around 90. Chance of precipitation 50 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 50 percent. .FRIDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy in the morning, then becoming mostly cloudy. A chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 40 percent. $$ ILZ013-221015- DuPage- Including the cities of Naperville, Wheaton, Downers Grove, Lombard, and Carol Stream 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear, breezy. Warm and humid. Lows in the upper 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to 10 to 15 mph after midnight. Heat index values up to 102 early in the evening. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph, increasing to 15 to 20 mph in the afternoon. Gusts up to 30 mph. Heat index values up to 106. .SUNDAY NIGHT...Clear. Continued warm and humid with lows in the upper 70s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening. Heat index values up to 100 early in the evening. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 103. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the mid 70s. Southwest winds 10 to 15 mph, diminishing to 5 to 10 mph after midnight. Chance of precipitation 30 percent. .TUESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. Heat index values up to 100. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of precipitation 40 percent. .WEDNESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs around 90. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 40 percent. .THURSDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. .THURSDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of precipitation 50 percent. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms after midnight. Lows in the upper 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy in the morning, then becoming mostly cloudy. A chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 40 percent. $$ ILZ020-221015- Kendall- Including the cities of Oswego, Yorkville, and Plano 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear, breezy. Warm and humid. Lows in the upper 70s. South winds 15 to 20 mph with gusts up to 30 mph, diminishing to 10 to 15 mph after midnight. Heat index values up to 101 early in the evening. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph, increasing to 15 to 20 mph in the afternoon. Gusts up to 30 mph. Heat index values up to 107. .SUNDAY NIGHT...Clear. Continued warm and humid with lows in the mid 70s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening. Heat index values up to 101 early in the evening. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 104. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of showers and thunderstorms. Lows in the mid 70s. Southwest winds 10 to 15 mph, diminishing to around 5 mph after midnight. Chance of precipitation 20 percent. .TUESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. Heat index values up to 100. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of precipitation 40 percent. .WEDNESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. Heat index values up to 100. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 40 percent. .THURSDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. Heat index values up to 100. .THURSDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of precipitation 50 percent. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms after midnight. Lows in the upper 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy in the morning, then becoming mostly cloudy. A chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 40 percent. $$ ILZ106-221015- Northern Will- Including the cities of Joliet, Bolingbrook, Plainfield, and Mokena 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear, breezy. Warm and humid. Lows in the upper 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to 10 to 15 mph after midnight. Heat index values up to 101 early in the evening. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph, increasing to 15 to 20 mph in the afternoon. Gusts up to 30 mph. Heat index values up to 107. .SUNDAY NIGHT...Clear. Continued warm and humid with lows in the mid 70s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening. Heat index values up to 101 early in the evening. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 104. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of showers and thunderstorms. Lows in the mid 70s. Southwest winds 10 to 15 mph, diminishing to 5 to 10 mph after midnight. Chance of precipitation 20 percent. .TUESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. Heat index values up to 100. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 40 percent. .WEDNESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. Heat index values up to 100. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 40 percent. .THURSDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. Heat index values up to 100. .THURSDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of precipitation 50 percent. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms after midnight. Lows in the upper 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 40 percent. $$ ILZ107-221015- Southern Will- Including the cities of Channahon, Manhattan, and Wilmington 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear. Warm and humid. Lows in the upper 70s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening. Heat index values up to 101 early in the evening. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph, increasing to 15 to 20 mph in the afternoon. Gusts up to 30 mph. Heat index values up to 108. .SUNDAY NIGHT...Clear. Continued warm and humid with lows in the mid 70s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening. Heat index values up to 101 early in the evening. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph. Heat index values up to 105. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the mid 70s. Southwest winds 5 to 10 mph. Chance of precipitation 20 percent. .TUESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the mid 90s. Chance of precipitation 40 percent. Heat index values up to 105. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 30 percent. .WEDNESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 40 percent. Heat index values up to 100. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 40 percent. .THURSDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 40 percent. Heat index values up to 100. .THURSDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 50 percent. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy in the morning, then becoming mostly cloudy. A chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 40 percent. $$ ILZ108-221015- Eastern Will- Including the cities of Crete, Peotone, and Beecher 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear, breezy. Warm and humid. Lows in the upper 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to 10 to 15 mph after midnight. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph, increasing to 15 to 20 mph in the afternoon. Gusts up to 30 mph. Heat index values up to 105. .SUNDAY NIGHT...Clear. Continued warm and humid with lows in the mid 70s. Southwest winds 10 to 15 mph. Heat index values up to 100 early in the evening. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph. Heat index values up to 103. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the mid 70s. Southwest winds 10 to 15 mph, diminishing to 5 to 10 mph after midnight. Chance of precipitation 20 percent. .TUESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 40 percent. Heat index values up to 100. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 30 percent. .WEDNESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 40 percent. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 40 percent. .THURSDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 40 percent. .THURSDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of precipitation 50 percent. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of precipitation 40 percent. $$ INZ001-221015- Lake IN- Including the cities of Gary, Hammond, and Merrillville 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear. Warm and humid. Lows in the upper 70s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph with gusts up to 30 mph. Heat index values up to 105. .SUNDAY NIGHT...Clear. Continued warm and humid with lows in the mid 70s. Southwest winds 10 to 15 mph. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 5 to 10 mph, increasing to 10 to 15 mph in the afternoon. Heat index values up to 102. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the mid 70s. Southwest winds 5 to 10 mph. Chance of precipitation 20 percent. .TUESDAY...Partly cloudy. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs around 90 inland, but only in the lower 80s near the lake. Chance of precipitation 50 percent. Heat index values up to 100. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 40 percent. .WEDNESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs around 90 inland, but only in the mid 80s near the lake. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 40 percent. .THURSDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. .THURSDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of precipitation 50 percent. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy in the morning, then mostly cloudy with a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of precipitation 40 percent. $$ INZ002-221015- Porter- Including the cities of Portage, Valparaiso, and Chesterton 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear. Warm and humid. Lows in the upper 70s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph with gusts up to 30 mph. Heat index values up to 103. .SUNDAY NIGHT...Clear. Continued warm and humid with lows in the mid 70s. South winds 10 to 15 mph, becoming southwest 5 to 10 mph after midnight. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 101. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the mid 70s. Southwest winds 5 to 10 mph. Chance of precipitation 20 percent. .TUESDAY...Partly cloudy. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs around 90 inland, but only around 80 near the lake. Chance of precipitation 40 percent. Heat index values up to 100. .TUESDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms, mainly in the evening. Lows in the lower 70s. Chance of precipitation 30 percent. .WEDNESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs around 90 inland, but only in the lower 80s near the lake. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 40 percent. .THURSDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. .THURSDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of precipitation 50 percent. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the mid 80s inland, but only in the lower 80s near the lake. Chance of precipitation 50 percent. .FRIDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 30 percent. .SATURDAY...Mostly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of precipitation 40 percent. $$ ILZ003-221015- Winnebago- Including the city of Rockford 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear, breezy. Warm and humid. Lows in the upper 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to 10 to 15 mph after midnight. Heat index values up to 100 early in the evening. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the mid 90s. Southwest winds 15 to 20 mph with gusts up to 35 mph. Heat index values up to 104. .SUNDAY NIGHT...Clear, breezy. Continued warm and humid with lows in the mid 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to 10 to 15 mph after midnight. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 15 to 20 mph with gusts up to 25 mph. Heat index values up to 102. .MONDAY NIGHT...Mostly clear early in the evening, then becoming partly cloudy late in the evening, then becoming mostly cloudy after midnight. A chance of showers and thunderstorms. Lows in the lower 70s. Southwest winds 10 to 15 mph, diminishing to around 5 mph after midnight. Chance of precipitation 50 percent. .TUESDAY...Mostly cloudy with a chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Highs in the upper 80s. Chance of precipitation 60 percent. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 50 percent. .WEDNESDAY...Mostly cloudy with a chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Highs in the upper 80s. Chance of precipitation 60 percent. .WEDNESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of precipitation 50 percent. .THURSDAY...Partly cloudy with a chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Highs in the upper 80s. Chance of precipitation 60 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 50 percent. .FRIDAY...Mostly cloudy with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 40 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then partly cloudy with a chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 40 percent. $$ ILZ004-221015- Boone- Including the city of Belvidere 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear, breezy. Warm and humid. Lows in the upper 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to 10 to 15 mph after midnight. Heat index values up to 100 early in the evening. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the lower 90s. Southwest winds 15 to 20 mph with gusts up to 35 mph. Heat index values up to 104. .SUNDAY NIGHT...Clear, breezy. Continued warm and humid with lows in the mid 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to 10 to 15 mph after midnight. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 15 to 20 mph with gusts up to 25 mph. Heat index values up to 102. .MONDAY NIGHT...Mostly clear early in the evening, then becoming partly cloudy in the late evening and early morning, then becoming mostly cloudy late. A chance of showers and thunderstorms. Lows in the lower 70s. Southwest winds 10 to 15 mph, diminishing to around 5 mph after midnight. Chance of precipitation 40 percent. .TUESDAY...Mostly cloudy with a chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Highs in the upper 80s. Chance of precipitation 60 percent. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 40 percent. .WEDNESDAY...Mostly cloudy with a chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Highs in the upper 80s. Chance of precipitation 60 percent. .WEDNESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 50 percent. .THURSDAY...Partly cloudy with a chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Highs in the upper 80s. Chance of precipitation 60 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 50 percent. .FRIDAY...Mostly cloudy with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 40 percent. .FRIDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of precipitation 30 percent. .SATURDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 40 percent. $$ ILZ008-221015- Ogle- Including the cities of Rochelle, Oregon, and Byron 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear, breezy. Warm and humid. Lows in the mid 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to 10 to 15 mph after midnight. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the lower 90s. Southwest winds 15 to 20 mph with gusts up to 35 mph. Heat index values up to 104. .SUNDAY NIGHT...Clear, breezy. Continued warm and humid with lows in the mid 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to 10 to 15 mph after midnight. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 15 to 20 mph with gusts up to 25 mph. Heat index values up to 103. .MONDAY NIGHT...Mostly clear early in the evening, then becoming partly cloudy late in the evening, then becoming mostly cloudy after midnight. A chance of showers and thunderstorms. Lows in the lower 70s. Southwest winds 10 to 15 mph, diminishing to 5 to 10 mph after midnight. Chance of precipitation 50 percent. .TUESDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers and thunderstorms. Highs around 90. Chance of precipitation 50 percent. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 50 percent. .WEDNESDAY...Mostly cloudy with a chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Highs in the lower 90s. Chance of precipitation 60 percent. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 50 percent. .THURSDAY...Partly cloudy with a chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Highs in the lower 90s. Chance of precipitation 60 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 50 percent. .FRIDAY...Mostly cloudy with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 40 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then partly cloudy with a chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 40 percent. $$ ILZ011-221015- De Kalb- Including the cities of DeKalb and Sycamore 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear, breezy. Warm and humid. Lows in the mid 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to 10 to 15 mph after midnight. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the lower 90s. Southwest winds 15 to 20 mph with gusts up to 35 mph. Heat index values up to 104. .SUNDAY NIGHT...Clear, breezy. Continued warm and humid with lows in the mid 70s. Southwest winds 10 to 15 mph. Gusts up to 30 mph in the evening. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 15 to 20 mph with gusts up to 25 mph. Heat index values up to 102. .MONDAY NIGHT...Mostly clear early in the evening, then becoming partly cloudy in the late evening and early morning, then becoming mostly cloudy late. A chance of showers and thunderstorms. Lows in the lower 70s. Southwest winds 10 to 15 mph, diminishing to 5 to 10 mph after midnight. Chance of precipitation 40 percent. .TUESDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 40 percent. .WEDNESDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 50 percent. .THURSDAY...Partly cloudy with a chance of showers and thunderstorms. Highs around 90. Chance of precipitation 50 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 50 percent. .FRIDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy in the morning, then becoming mostly cloudy. A chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 40 percent. $$ ILZ010-221015- Lee- Including the city of Dixon 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear, breezy. Warm and humid. Lows in the mid 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to 10 to 15 mph after midnight. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the lower 90s. Southwest winds 15 to 20 mph with gusts up to 35 mph. Heat index values up to 105. .SUNDAY NIGHT...Clear. Continued warm and humid with lows in the mid 70s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph, increasing to 15 to 20 mph in the afternoon. Heat index values up to 102. .MONDAY NIGHT...Mostly clear early in the evening, then becoming partly cloudy in the late evening and early morning, then becoming mostly cloudy late. A chance of showers and thunderstorms. Lows in the lower 70s. Southwest winds 10 to 15 mph, diminishing to 5 to 10 mph after midnight. Chance of precipitation 40 percent. .TUESDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of precipitation 40 percent. .WEDNESDAY...Mostly cloudy in the morning, then becoming partly cloudy. A chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. .WEDNESDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 50 percent. .THURSDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 50 percent. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy in the morning, then becoming mostly cloudy. A chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 40 percent. $$ ILZ019-221015- La Salle- Including the cities of Ottawa, Streator, La Salle, Mendota, and Marseilles 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear, breezy. Warm and humid. Lows in the mid 70s. Southwest winds 15 to 20 mph with gusts up to 30 mph, diminishing to 10 to 15 mph after midnight. Heat index values up to 100 early in the evening. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph, increasing to 15 to 20 mph in the afternoon. Gusts up to 30 mph. Heat index values up to 106. .SUNDAY NIGHT...Clear. Continued warm and humid with lows in the mid 70s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 101. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of showers and thunderstorms. Lows in the mid 70s. Southwest winds 10 to 15 mph, diminishing to 5 to 10 mph after midnight. Chance of precipitation 20 percent. .TUESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. Heat index values up to 100. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 40 percent. .WEDNESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. Heat index values up to 100. .WEDNESDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 40 percent. .THURSDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 50 percent. .THURSDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of precipitation 50 percent. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Mostly cloudy in the evening, then partly cloudy with a chance of showers and thunderstorms after midnight. Lows in the upper 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy in the morning, then becoming mostly cloudy. A chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 40 percent. $$ ILZ021-221015- Grundy- Including the cities of Morris, Coal City, and Minooka 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear. Warm and humid. Lows in the upper 70s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening. Heat index values up to 102 early in the evening. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph, increasing to 15 to 20 mph in the afternoon. Gusts up to 30 mph. Heat index values up to 108. .SUNDAY NIGHT...Clear. Continued warm and humid with lows in the mid 70s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening. Heat index values up to 101 early in the evening. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the afternoon. Heat index values up to 104. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the mid 70s. Southwest winds 5 to 10 mph. Chance of precipitation 20 percent. .TUESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the mid 90s. Chance of precipitation 50 percent. Heat index values up to 105. .TUESDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 30 percent. .WEDNESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 40 percent. Heat index values up to 100. .WEDNESDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 40 percent. .THURSDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 40 percent. Heat index values up to 100. .THURSDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 50 percent. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 40 percent. $$ ILZ032-221015- Livingston- Including the cities of Pontiac, Dwight, and Fairbury 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear. Warm and humid. Lows in the mid 70s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening. Heat index values up to 100 early in the evening. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the lower 90s. Southwest winds 10 to 15 mph, increasing to 15 to 20 mph in the afternoon. Gusts up to 30 mph. Heat index values up to 106. .SUNDAY NIGHT...Clear. Continued warm and humid with lows in the mid 70s. Southwest winds 10 to 15 mph. Heat index values up to 100 early in the evening. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph. Heat index values up to 103. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the mid 70s. Southwest winds 5 to 10 mph. Chance of precipitation 20 percent. .TUESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the mid 90s. Chance of precipitation 40 percent. Heat index values up to 105. .TUESDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms, mainly in the evening. Lows in the lower 70s. Chance of precipitation 30 percent. .WEDNESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 40 percent. Heat index values up to 105. .WEDNESDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the lower 70s. Chance of precipitation 30 percent. .THURSDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of precipitation 40 percent. Heat index values up to 100. .THURSDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 50 percent. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 40 percent. $$ ILZ023-221015- Kankakee- Including the cities of Kankakee, Bourbonnais, and Bradley 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear. Warm and humid. Lows in the mid 70s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph with gusts up to 30 mph. Heat index values up to 106. .SUNDAY NIGHT...Clear. Continued warm and humid with lows in the mid 70s. Southwest winds 10 to 15 mph. Heat index values up to 100 early in the evening. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph. Heat index values up to 103. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the mid 70s. Southwest winds 5 to 10 mph. Chance of precipitation 20 percent. .TUESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 40 percent. Heat index values up to 100. .TUESDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms, mainly in the evening. Lows in the lower 70s. Chance of precipitation 30 percent. .WEDNESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 40 percent. Heat index values up to 100. .WEDNESDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 30 percent. .THURSDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of precipitation 40 percent. Heat index values up to 100. .THURSDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows around 70. Chance of precipitation 50 percent. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy in the morning, then becoming mostly cloudy. A chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 40 percent. $$ ILZ039-221015- Ford- Including the cities of Paxton and Gibson City 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear. Warm and humid. Lows in the mid 70s. Southwest winds 10 to 15 mph. Gusts up to 25 mph in the evening. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the lower 90s. Southwest winds 10 to 15 mph with gusts up to 30 mph. Heat index values up to 105. .SUNDAY NIGHT...Clear. Continued warm and humid with lows in the mid 70s. Southwest winds 10 to 15 mph. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph. Heat index values up to 102. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of showers and thunderstorms after midnight. Lows in the mid 70s. Southwest winds 5 to 10 mph. Chance of precipitation 20 percent. .TUESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 40 percent. Heat index values up to 100. .TUESDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms, mainly in the evening. Lows in the lower 70s. Chance of precipitation 30 percent. .WEDNESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 40 percent. Heat index values up to 100. .WEDNESDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the lower 70s. Chance of precipitation 30 percent. .THURSDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of precipitation 40 percent. Heat index values up to 100. .THURSDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 40 percent. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy in the morning, then becoming mostly cloudy. A chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 40 percent. $$ ILZ033-221015- Iroquois- Including the cities of Watseka and Gilman 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear. Warm and humid. Lows in the mid 70s. Southwest winds 10 to 15 mph. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph with gusts up to 30 mph. Heat index values up to 105. .SUNDAY NIGHT...Clear. Continued warm and humid with lows in the mid 70s. South winds 5 to 10 mph. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 5 to 10 mph, increasing to 10 to 15 mph in the afternoon. Heat index values up to 102. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Southwest winds 5 to 10 mph. .TUESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 40 percent. Heat index values up to 100. .TUESDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms, mainly in the evening. Lows in the lower 70s. Chance of precipitation 30 percent. .WEDNESDAY...Partly cloudy. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of precipitation 40 percent. Heat index values up to 100. .WEDNESDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the lower 70s. Chance of precipitation 30 percent. .THURSDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of precipitation 40 percent. Heat index values up to 100. .THURSDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 40 percent. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy in the morning, then becoming mostly cloudy. A chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 40 percent. $$ INZ010-221015- Newton- Including the cities of Roselawn, Kentland, and Morocco 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear. Warm and humid. Lows in the mid 70s. Southwest winds 10 to 15 mph. .SUNDAY...Sunny, breezy. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph with gusts up to 30 mph. Heat index values up to 104. .SUNDAY NIGHT...Clear. Continued warm and humid with lows in the mid 70s. Southwest winds 5 to 10 mph. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 102. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Southwest winds 5 to 10 mph. .TUESDAY...Partly cloudy. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of precipitation 40 percent. Heat index values up to 100. .TUESDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms, mainly in the evening. Lows in the lower 70s. Chance of precipitation 30 percent. .WEDNESDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of precipitation 40 percent. Heat index values up to 100. .WEDNESDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the lower 70s. Chance of precipitation 30 percent. .THURSDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of precipitation 40 percent. .THURSDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 40 percent. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy in the morning, then mostly cloudy with a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of precipitation 40 percent. $$ INZ011-221015- Jasper- Including the cities of Rensselaer and DeMotte 204 PM CDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear. Warm and humid. Lows in the mid 70s. Southwest winds 10 to 15 mph. .SUNDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 104. .SUNDAY NIGHT...Clear. Continued warm and humid with lows in the mid 70s. Southwest winds 5 to 10 mph. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 102. .MONDAY NIGHT...Mostly clear through the early overnight, then becoming partly cloudy. Lows in the mid 70s. Southwest winds 5 to 10 mph. .TUESDAY...Partly cloudy. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of precipitation 40 percent. Heat index values up to 100. .TUESDAY NIGHT...Mostly cloudy. A chance of showers and thunderstorms, mainly in the evening. Lows in the lower 70s. Chance of precipitation 30 percent. .WEDNESDAY...Partly cloudy. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of precipitation 40 percent. .WEDNESDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 30 percent. .THURSDAY...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of precipitation 40 percent. .THURSDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 40 percent. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy. A chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of precipitation 40 percent. $$ INZ019-221015- Benton- Including the cities of Fowler and Oxford 304 PM EDT Sat Jun 21 2025 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT CDT /1 AM EDT/ MONDAY NIGHT... .TONIGHT...Clear. Warm and humid. Lows in the mid 70s. Southwest winds 10 to 15 mph. .SUNDAY...Sunny. Continued hot and humid with highs in the lower 90s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Heat index values up to 103. .SUNDAY NIGHT...Clear. Continued warm and humid with lows in the mid 70s. South winds 5 to 10 mph. .MONDAY...Sunny. Continued hot and humid with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 101. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s. Southwest winds 5 to 10 mph. .TUESDAY...Partly cloudy. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of precipitation 30 percent. Heat index values up to 100. .TUESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 20 percent. .WEDNESDAY...Partly cloudy. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of precipitation 40 percent. .WEDNESDAY NIGHT...Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the lower 70s. Chance of precipitation 30 percent. .THURSDAY...Mostly sunny in the morning, then partly cloudy with a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Chance of precipitation 40 percent. .THURSDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the lower 70s. Chance of precipitation 40 percent. .FRIDAY...Partly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of precipitation 50 percent. .FRIDAY NIGHT...Partly cloudy with a chance of showers and thunderstorms. Lows in the upper 60s. Chance of precipitation 30 percent. .SATURDAY...Partly cloudy in the morning, then mostly cloudy with a chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of precipitation 40 percent. $$