Zone Forecast Product
Issued by NWS St. Louis, MO
Issued by NWS St. Louis, MO
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206 FPUS53 KLSX 060853 ZFPLSX Zone Forecasts National Weather Service Saint Louis MO 353 AM CDT Sun Sep 6 2026 ILZ100-101-MOZ061-063-064-061600- Madison IL-Saint Clair IL-Saint Charles MO-Saint Louis MO- Saint Louis City MO- Including the cities of Alton, Edwardsville, Belleville, Cahokia, Saint Charles, and Saint Louis 353 AM CDT Sun Sep 6 2026 .TODAY...Mostly sunny. Not as warm with highs around 90. Northeast winds 5 to 10 mph. .TONIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 60s. Northeast winds 5 to 10 mph. .LABOR DAY...Sunny. Highs in the upper 80s. East winds 5 to 10 mph. .MONDAY NIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 60s. East winds around 5 mph. .TUESDAY...Sunny, hot with highs in the mid 90s. South winds around 5 mph. .TUESDAY NIGHT...Mostly clear. Not as cool with lows in the lower 70s. .WEDNESDAY...Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs in the upper 90s. Chance of rain 20 percent. Heat index values up to 105 in the afternoon. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows around 70. Chance of rain 70 percent. Heat index values up to 100 early in the evening. .THURSDAY...Mostly cloudy in the morning, then becoming partly sunny. A slight chance of thunderstorms. A chance of showers, mainly in the morning. Not as warm with highs in the mid 80s. Chance of rain 50 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then mostly clear with a slight chance of showers after midnight. Lows in the mid 60s. Chance of rain 20 percent. .FRIDAY...Sunny with a 20 percent chance of showers. Highs in the mid 80s. .FRIDAY NIGHT...Mostly clear with a slight chance of showers and thunderstorms. Lows in the mid 60s. Chance of rain 20 percent. .SATURDAY...Sunny. A slight chance of showers in the morning. Highs around 90. Chance of rain 20 percent. $$ MOZ049-050-061600- Osage MO-Callaway MO- Including the city of Fulton 353 AM CDT Sun Sep 6 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING... .TODAY...Sunny. Highs in the lower 90s. East winds 5 to 10 mph. Heat index values up to 100. .TONIGHT...Partly cloudy in the evening, then clearing. Lows in the mid 60s. East winds 5 to 10 mph. .LABOR DAY...Sunny. Highs in the upper 80s. East winds 5 to 10 mph. .MONDAY NIGHT...Mostly clear. Lows in the mid 60s. Southeast winds 5 to 10 mph. .TUESDAY...Sunny, hot with highs in the mid 90s. South winds around 5 mph. .TUESDAY NIGHT...Mostly clear. Lows in the mid 70s. .WEDNESDAY...Mostly sunny. A slight chance of showers in the morning, then a chance of showers with a slight chance of thunderstorms in the afternoon. Hot with highs in the mid 90s. Chance of rain 30 percent. Heat index values up to 105 in the afternoon. .WEDNESDAY NIGHT...Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the upper 60s. Chance of rain 70 percent. .THURSDAY...Mostly cloudy with a chance of showers and thunderstorms in the morning, then partly sunny with a slight chance of showers and thunderstorms in the afternoon. Cooler with highs in the lower 80s. Chance of rain 50 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then mostly clear with a slight chance of showers after midnight. Lows in the lower 60s. Chance of rain 20 percent. .FRIDAY AND FRIDAY NIGHT...Mostly clear. A chance of showers with a slight chance of thunderstorms. Highs in the mid 80s. Lows in the mid 60s. Chance of rain 30 percent. .SATURDAY...Sunny. A slight chance of showers and thunderstorms in the morning. Highs in the upper 80s. Chance of rain 20 percent. $$ MOZ042-061600- Audrain MO- Including the city of Mexico 353 AM CDT Sun Sep 6 2026 .TODAY...Mostly sunny. Highs in the lower 90s. East winds 5 to 10 mph. .TONIGHT...Partly cloudy. Lows in the mid 60s. East winds 5 to 10 mph. .LABOR DAY...Mostly sunny. Highs in the upper 80s. East winds 5 to 10 mph. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 60s. Southeast winds 5 to 10 mph. .TUESDAY...Mostly sunny. Hot with highs in the mid 90s. South winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear. Not as cool with lows in the mid 70s. .WEDNESDAY...Mostly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the lower 90s. Chance of rain 40 percent. .WEDNESDAY NIGHT...Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the mid 60s. Chance of rain 70 percent. .THURSDAY...Mostly cloudy with a chance of showers with a slight chance of thunderstorms in the morning, then mostly sunny in the afternoon. Cooler with highs in the lower 80s. Chance of rain 50 percent. .THURSDAY NIGHT AND FRIDAY...Mostly clear. A 20 percent chance of showers. Lows in the lower 60s. Highs in the lower 80s. .FRIDAY NIGHT...Mostly clear in the evening, then partly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Lows in the lower 60s. Chance of rain 30 percent. .SATURDAY...Sunny. A slight chance of showers in the morning. Highs in the mid 80s. Chance of rain 20 percent. $$ MOZ041-047-048-061600- Boone MO-Moniteau MO-Cole MO- Including the cities of Columbia and Jefferson City 353 AM CDT Sun Sep 6 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING... .TODAY...Sunny, hot with highs in the mid 90s. East winds 5 to 10 mph. Heat index values up to 103. .TONIGHT...Partly cloudy. Lows in the upper 60s. East winds 5 to 10 mph. .LABOR DAY...Mostly sunny. Highs in the lower 90s. East winds 5 to 10 mph. .MONDAY NIGHT...Mostly clear. Lows in the upper 60s. Southeast winds 5 to 10 mph. .TUESDAY...Sunny, hot with highs in the upper 90s. South winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear. Lows in the mid 70s. Heat index values up to 100 early in the evening. .WEDNESDAY...Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Hot with highs in the upper 90s. Chance of rain 40 percent. Heat index values up to 105 in the afternoon. .WEDNESDAY NIGHT...Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the upper 60s. Chance of rain 70 percent. Heat index values up to 100 early in the evening. .THURSDAY...Mostly cloudy with a chance of showers and thunderstorms in the morning, then partly sunny with a slight chance of showers and thunderstorms in the afternoon. Not as warm with highs in the mid 80s. Chance of rain 50 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then mostly clear with a slight chance of showers after midnight. Lows in the mid 60s. Chance of rain 20 percent. .FRIDAY AND FRIDAY NIGHT...Mostly clear. A chance of showers with a slight chance of thunderstorms. Highs in the upper 80s. Lows in the mid 60s. Chance of rain 30 percent. .SATURDAY...Sunny. A slight chance of showers and thunderstorms in the morning. Highs around 90. Chance of rain 20 percent. $$ ILZ095>097-MOZ018-019-026-027-034>036-061600- Adams IL-Brown IL-Pike IL-Knox MO-Lewis MO-Shelby MO-Marion MO- Monroe MO-Ralls MO-Pike MO- Including the cities of Quincy, Mount Sterling, Pittsfield, Hannibal, and Bowling Green 353 AM CDT Sun Sep 6 2026 .TODAY...Mostly sunny. Highs in the upper 80s. East winds 5 to 10 mph. .TONIGHT...Partly cloudy. Lows in the lower 60s. East winds 5 to 10 mph. .LABOR DAY...Mostly sunny. Highs in the upper 80s. East winds 5 to 10 mph. .MONDAY NIGHT...Partly cloudy. Lows in the mid 60s. Southeast winds 5 to 10 mph. .TUESDAY...Mostly sunny. Hot with highs in the mid 90s. South winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear in the evening, then partly cloudy with a slight chance of showers and thunderstorms after midnight. Not as cool with lows in the mid 70s. Chance of rain 20 percent. .WEDNESDAY...Partly sunny with a chance of showers with a slight chance of thunderstorms. Highs in the lower 90s. Chance of rain 50 percent. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the mid 60s. Chance of rain 70 percent. .THURSDAY...Partly sunny. A chance of showers in the morning. Highs in the lower 80s. Chance of rain 50 percent. .THURSDAY NIGHT AND FRIDAY...Mostly clear. A 20 percent chance of showers. Lows in the lower 60s. Highs in the mid 80s. .FRIDAY NIGHT...Mostly clear. A slight chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 20 percent. .SATURDAY...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 20 percent. $$ ILZ069-070-074-061600- Clinton IL-Marion IL-Washington IL- Including the cities of Centralia and Salem 353 AM CDT Sun Sep 6 2026 .TODAY...Mostly cloudy this morning, then clearing. Not as warm with highs in the upper 80s. Northeast winds 5 to 10 mph. .TONIGHT...Mostly clear. Lows in the lower 60s. Northeast winds 5 to 10 mph. .LABOR DAY...Sunny. Highs in the upper 80s. Northeast winds 5 to 10 mph. .MONDAY NIGHT...Mostly clear. Lows in the lower 60s. East winds around 5 mph. .TUESDAY...Sunny. Highs in the mid 90s. South winds around 5 mph. .TUESDAY NIGHT AND WEDNESDAY...Mostly clear. Hot. Lows in the lower 70s. Highs in the upper 90s. Heat index values up to 105. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 50 percent. Heat index values up to 100 early in the evening. .THURSDAY...Partly sunny. A chance of showers with a slight chance of thunderstorms in the morning, then a slight chance of showers in the afternoon. Not as warm with highs in the mid 80s. Chance of rain 50 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then mostly clear with a slight chance of showers after midnight. Lows in the lower 60s. Chance of rain 20 percent. .FRIDAY...Sunny with a 20 percent chance of showers. Highs in the upper 80s. .FRIDAY NIGHT...Mostly clear with a slight chance of showers. A slight chance of thunderstorms after midnight. Lows in the mid 60s. Chance of rain 20 percent. .SATURDAY...Sunny. A slight chance of showers in the morning. Highs around 90. Chance of rain 20 percent. $$ MOZ074-084-085-061600- Saint Francois MO-Iron MO-Madison MO- Including the city of Farmington 353 AM CDT Sun Sep 6 2026 .TODAY...Sunny. Highs in the lower 90s. Northeast winds 5 to 10 mph. .TONIGHT...Mostly clear. Lows in the lower 60s. Northeast winds around 5 mph. .LABOR DAY...Sunny. Highs in the upper 80s. Northeast winds around 5 mph. .MONDAY NIGHT...Mostly clear. Lows in the lower 60s. East winds around 5 mph in the evening, becoming light and variable. .TUESDAY...Sunny. Highs in the lower 90s. South winds around 5 mph. .TUESDAY NIGHT AND WEDNESDAY...Mostly clear. Hot. Lows in the upper 60s. Highs in the mid 90s. Heat index values up to 105. .WEDNESDAY NIGHT...Partly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows around 70. Chance of rain 50 percent. .THURSDAY...Partly sunny with a chance of showers and thunderstorms. Not as warm with highs in the mid 80s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy in the evening, then clearing. A 20 percent chance of showers. Lows in the mid 60s. .FRIDAY...Sunny with a 20 percent chance of showers. Highs in the mid 80s. .FRIDAY NIGHT...Mostly clear with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the mid 60s. Chance of rain 30 percent. .SATURDAY...Sunny. A slight chance of showers in the morning. Highs in the upper 80s. Chance of rain 20 percent. $$ MOZ099-061600- Reynolds MO- 353 AM CDT Sun Sep 6 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING... .TODAY...Sunny. Highs in the mid 90s. Northeast winds around 5 mph. Heat index values up to 104. .TONIGHT...Mostly clear. Lows in the mid 60s. Northeast winds around 5 mph. .LABOR DAY...Sunny. Highs in the upper 80s. East winds around 5 mph. .MONDAY NIGHT...Mostly clear. Lows in the lower 60s. Light and variable winds. .TUESDAY...Sunny. Highs in the mid 90s. South winds around 5 mph. .TUESDAY NIGHT AND WEDNESDAY...Mostly clear. Hot. Lows in the upper 60s. Highs in the upper 90s. Heat index values up to 105. .WEDNESDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the upper 60s. Chance of rain 40 percent. .THURSDAY...Partly sunny with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Not as warm with highs in the upper 80s. Chance of rain 50 percent. .THURSDAY NIGHT...Mostly cloudy with a chance of showers in the evening, then partly cloudy with a slight chance of showers after midnight. Lows in the mid 60s. Chance of rain 50 percent. .FRIDAY...Sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 20 percent. .FRIDAY NIGHT...Mostly clear. A slight chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Lows in the lower 60s. Chance of rain 30 percent. .SATURDAY...Sunny. A slight chance of showers in the morning. Highs around 90. Chance of rain 20 percent. $$ MOZ051-052-060-061600- Montgomery MO-Lincoln MO-Warren MO- 353 AM CDT Sun Sep 6 2026 .TODAY...Mostly sunny. Not as warm with highs around 90. Northeast winds 5 to 10 mph. .TONIGHT...Partly cloudy. Lows in the lower 60s. East winds around 5 mph. .LABOR DAY...Sunny. Highs in the upper 80s. East winds around 5 mph. .MONDAY NIGHT...Mostly clear. Lows in the lower 60s. Southeast winds around 5 mph. .TUESDAY...Sunny. Highs in the mid 90s. South winds around 5 mph. .TUESDAY NIGHT...Mostly clear. Not as cool with lows in the lower 70s. .WEDNESDAY...Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Hot with highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 105 in the afternoon. .WEDNESDAY NIGHT...Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the upper 60s. Chance of rain 70 percent. Heat index values up to 100 early in the evening. .THURSDAY...Mostly cloudy in the morning, then becoming mostly sunny. A slight chance of thunderstorms. A chance of showers, mainly in the morning. Cooler with highs in the lower 80s. Chance of rain 50 percent. .THURSDAY NIGHT AND FRIDAY...Mostly clear. A 20 percent chance of showers. Lows in the lower 60s. Highs in the mid 80s. .FRIDAY NIGHT...Mostly clear with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the lower 60s. Chance of rain 30 percent. .SATURDAY...Sunny. A slight chance of showers in the morning. Highs in the upper 80s. Chance of rain 20 percent. $$ ILZ058-059-098-099-061600- Greene IL-Macoupin IL-Calhoun IL-Jersey IL- 353 AM CDT Sun Sep 6 2026 .TODAY...Partly sunny this morning, then clearing. Not as warm with highs in the upper 80s. Northeast winds 5 to 10 mph. .TONIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s. East winds 5 to 10 mph. .LABOR DAY...Sunny. Highs in the upper 80s. East winds around 5 mph. .MONDAY NIGHT...Partly cloudy in the evening, then clearing. Lows in the lower 60s. East winds around 5 mph. .TUESDAY...Sunny. Highs in the mid 90s. South winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear. Not as cool with lows in the lower 70s. .WEDNESDAY...Mostly sunny. A slight chance of showers in the morning. Hot with highs in the mid 90s. Chance of rain 20 percent. .WEDNESDAY NIGHT...Mostly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the upper 60s. Chance of rain 70 percent. .THURSDAY...Partly sunny. A chance of showers with a slight chance of thunderstorms in the morning, then a slight chance of showers in the afternoon. Cooler with highs in the mid 80s. Chance of rain 50 percent. .THURSDAY NIGHT AND FRIDAY...Mostly clear. A 20 percent chance of showers. Lows in the lower 60s. Highs in the mid 80s. .FRIDAY NIGHT...Mostly clear with a slight chance of showers and thunderstorms. Lows in the lower 60s. Chance of rain 20 percent. .SATURDAY...Sunny. A slight chance of showers in the morning. Highs around 90. Chance of rain 20 percent. $$ ILZ060-064-065-061600- Montgomery IL-Bond IL-Fayette IL- Including the cities of Litchfield and Vandalia 353 AM CDT Sun Sep 6 2026 .TODAY...Mostly cloudy this morning, then clearing. Not as warm with highs in the upper 80s. Northeast winds 5 to 10 mph. .TONIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s. Northeast winds 5 to 10 mph. .LABOR DAY...Sunny. Highs in the mid 80s. East winds 5 to 10 mph. .MONDAY NIGHT...Mostly clear. Lows in the lower 60s. East winds around 5 mph. .TUESDAY...Sunny. Highs in the lower 90s. South winds 5 to 10 mph. .TUESDAY NIGHT...Mostly clear. Not as cool with lows in the lower 70s. .WEDNESDAY...Mostly sunny. Hot with highs in the upper 90s. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the upper 60s. Chance of rain 70 percent. .THURSDAY...Partly sunny. A chance of showers with a slight chance of thunderstorms in the morning, then a slight chance of showers in the afternoon. Cooler with highs in the mid 80s. Chance of rain 50 percent. .THURSDAY NIGHT AND FRIDAY...Mostly clear. A 20 percent chance of showers. Lows in the lower 60s. Highs in the mid 80s. .FRIDAY NIGHT AND SATURDAY...Mostly clear. A slight chance of showers and thunderstorms. Lows in the lower 60s. Highs in the upper 80s. Chance of rain 20 percent. $$ ILZ079-MOZ075-061600- Randolph IL-Sainte Genevieve MO- Including the cities of Chester and Sparta 353 AM CDT Sun Sep 6 2026 .TODAY...Mostly sunny. Not as warm with highs around 90. Northeast winds 5 to 10 mph. .TONIGHT...Mostly clear. Lows in the lower 60s. Northeast winds 5 to 10 mph. .LABOR DAY...Sunny. Highs in the upper 80s. Northeast winds around 5 mph. .MONDAY NIGHT...Mostly clear. Lows in the lower 60s. East winds around 5 mph in the evening, becoming light and variable. .TUESDAY...Sunny. Highs in the lower 90s. South winds around 5 mph. .TUESDAY NIGHT AND WEDNESDAY...Mostly clear. Hot. Lows in the lower 70s. Highs in the upper 90s. Heat index values up to 105. .WEDNESDAY NIGHT...Partly cloudy with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the lower 70s. Chance of rain 50 percent. Heat index values up to 100 early in the evening. .THURSDAY...Partly sunny. A chance of showers and thunderstorms, mainly in the morning. Not as warm with highs in the mid 80s. Chance of rain 50 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then mostly clear with a slight chance of showers after midnight. Lows in the mid 60s. Chance of rain 20 percent. .FRIDAY...Sunny. A slight chance of showers in the morning. Highs in the mid 80s. Chance of rain 20 percent. .FRIDAY NIGHT...Mostly clear. A chance of showers with a slight chance of thunderstorms after midnight. Lows in the mid 60s. Chance of rain 30 percent. .SATURDAY...Sunny. A slight chance of showers in the morning. Highs around 90. Chance of rain 20 percent. $$ MOZ062-073-061600- Franklin MO-Washington MO- Including the cities of Washington, Union, and Sullivan 353 AM CDT Sun Sep 6 2026 .TODAY...Sunny. Highs in the lower 90s. Northeast winds around 5 mph. .TONIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 60s. East winds around 5 mph. .LABOR DAY...Sunny. Highs in the upper 80s. East winds around 5 mph. .MONDAY NIGHT...Mostly clear. Lows in the lower 60s. East winds around 5 mph in the evening, becoming light and variable. .TUESDAY...Sunny. Highs in the mid 90s. South winds around 5 mph. .TUESDAY NIGHT AND WEDNESDAY...Mostly clear. Hot. Lows in the lower 70s. Highs in the upper 90s. Heat index values up to 105. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the upper 60s. Chance of rain 70 percent. Heat index values up to 100 early in the evening. .THURSDAY...Showers likely with a chance of thunderstorms in the morning, then partly sunny with a chance of showers with a slight chance of thunderstorms in the afternoon. Cooler with highs in the mid 80s. Chance of rain 70 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then mostly clear with a slight chance of showers after midnight. Lows in the lower 60s. Chance of rain 20 percent. .FRIDAY...Sunny with a 20 percent chance of showers. Highs in the mid 80s. .FRIDAY NIGHT...Mostly clear with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the lower 60s. Chance of rain 30 percent. .SATURDAY...Sunny. A slight chance of showers in the morning. Highs in the upper 80s. Chance of rain 20 percent. $$ MOZ059-072-061600- Gasconade MO-Crawford MO- 353 AM CDT Sun Sep 6 2026 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING... .TODAY...Sunny. Highs in the lower 90s. Northeast winds 5 to 10 mph. Heat index values up to 100. .TONIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 60s. East winds around 5 mph. .LABOR DAY...Sunny. Highs in the upper 80s. East winds around 5 mph. .MONDAY NIGHT...Mostly clear. Lows in the lower 60s. Southeast winds around 5 mph. .TUESDAY...Sunny. Highs in the mid 90s. South winds around 5 mph. .TUESDAY NIGHT...Mostly clear. Lows in the lower 70s. .WEDNESDAY...Sunny. A slight chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Chance of rain 20 percent. Heat index values up to 105. .WEDNESDAY NIGHT...Partly cloudy with a chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Lows in the upper 60s. Chance of rain 70 percent. .THURSDAY...Showers likely with a chance of thunderstorms in the morning, then partly sunny with a chance of showers with a slight chance of thunderstorms in the afternoon. Cooler with highs in the lower 80s. Chance of rain 70 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then mostly clear with a slight chance of showers after midnight. Lows in the lower 60s. Chance of rain 20 percent. .FRIDAY...Sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent. .FRIDAY NIGHT...Mostly clear with a slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Lows in the mid 60s. Chance of rain 30 percent. .SATURDAY...Sunny. A slight chance of showers in the morning. Highs in the upper 80s. Chance of rain 20 percent. $$ ILZ102-MOZ065-061600- Monroe IL-Jefferson MO- 353 AM CDT Sun Sep 6 2026 .TODAY...Mostly sunny. Not as warm with highs in the lower 90s. Northeast winds 5 to 10 mph. .TONIGHT...Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 60s. Northeast winds 5 to 10 mph. .LABOR DAY...Sunny. Highs in the upper 80s. East winds around 5 mph. .MONDAY NIGHT...Mostly clear. Lows in the lower 60s. East winds around 5 mph in the evening, becoming light and variable. .TUESDAY...Sunny, hot with highs in the mid 90s. South winds around 5 mph. .TUESDAY NIGHT AND WEDNESDAY...Mostly clear. Hot. Lows in the lower 70s. Highs in the upper 90s. Heat index values up to 105. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. A chance of thunderstorms. A chance of showers. Lows around 70. Chance of rain 50 percent. Heat index values up to 100 early in the evening. .THURSDAY...Showers likely with a chance of thunderstorms in the morning, then partly sunny with a slight chance of showers and thunderstorms in the afternoon. Not as warm with highs in the mid 80s. Chance of rain 60 percent. .THURSDAY NIGHT...Partly cloudy in the evening, then mostly clear with a slight chance of showers after midnight. Lows in the lower 60s. Chance of rain 20 percent. .FRIDAY...Sunny. A slight chance of showers in the morning. Highs in the upper 80s. Chance of rain 20 percent. .FRIDAY NIGHT...Mostly clear. A chance of showers with a slight chance of thunderstorms after midnight. Lows in the lower 60s. Chance of rain 30 percent. .SATURDAY...Sunny. A slight chance of showers in the morning. Highs around 90. Chance of rain 20 percent. $$