Zone Forecast Product
Issued by NWS Chicago, IL

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104
FPUS53 KLOT 190216 AAC
ZFPLOT

Zone Forecast Product...UPDATED
National Weather Service Chicago/Romeoville, IL
916 PM CDT Mon Aug 18 2025

ILZ104-191015-
Central Cook-
Including the cities of Chicago, Cicero, Oak Lawn, Oak Park,
and La Grange
916 PM CDT Mon Aug 18 2025

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT TUESDAY...

.REST OF TONIGHT...Showers and thunderstorms late in the evening,
then a chance of showers and thunderstorms after midnight. Some
thunderstorms may produce heavy rainfall in the late evening and
early morning. Nearly steady temperatures in the mid 70s.
Southwest winds 5 to 10 mph. Chance of precipitation near
100 percent.
.TUESDAY...Mostly cloudy. A chance of showers and thunderstorms
through mid morning, then a slight chance of showers and
thunderstorms in the late morning and afternoon. Highs in the mid
80s. West winds 5 to 10 mph, becoming north in the afternoon.
Chance of precipitation 40 percent.
.TUESDAY NIGHT...Mostly cloudy. Lows in the lower 70s. North
winds 5 to 10 mph.
.WEDNESDAY...Mostly cloudy through mid morning, then becoming
partly cloudy. Highs in the upper 70s. North winds 10 to 15 mph.
.WEDNESDAY NIGHT...Mostly clear. Nearly steady temperatures in
the lower 70s. North winds 10 to 15 mph, becoming northeast 5 to
10 mph after midnight.
.THURSDAY...Sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Clear. Lows in the mid 60s.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the upper 60s.
.SATURDAY...Mostly sunny. Highs in the lower 80s.
.SATURDAY NIGHT...Clear. Lows in the lower 60s.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the upper 50s.
.MONDAY...Mostly sunny. Highs in the lower 70s.

$$

ILZ103-191015-
Northern Cook-
Including the cities of Evanston, Des Plaines, Schaumburg,
Palatine, and Northbrook
916 PM CDT Mon Aug 18 2025

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT TUESDAY...

.REST OF TONIGHT...Cloudy. Showers and thunderstorms late in the
evening, then a chance of showers and thunderstorms after
midnight. Some thunderstorms may produce heavy rainfall in the
late evening and early morning. Nearly steady temperatures in the
lower 70s. Southwest winds 5 to 10 mph. Chance of precipitation
90 percent.
.TUESDAY...Mostly cloudy. A slight chance of showers and
thunderstorms through mid morning. Highs in the mid 80s. West
winds 5 to 10 mph, becoming north in the afternoon. Chance of
precipitation 20 percent.
.TUESDAY NIGHT...Decreasing cloudiness. Lows in the upper 60s.
North winds 5 to 10 mph.
.WEDNESDAY...Mostly cloudy in the morning, then becoming partly
cloudy. Highs in the upper 70s. North winds 5 to 10 mph,
increasing to 10 to 15 mph in the afternoon.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Sunny. Highs in the lower 80s inland, but only in the
upper 70s near the lake.
.THURSDAY NIGHT...Clear. Lows in the mid 60s.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs around 80.
.SATURDAY NIGHT...Clear. Lows in the upper 50s.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the mid 50s.
.MONDAY...Mostly sunny. Highs in the lower 70s.

$$

ILZ105-191015-
Southern Cook-
Including the cities of Calumet City, Oak Forest, Lemont,
Orland Park, and Park Forest
916 PM CDT Mon Aug 18 2025

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT TUESDAY...

.REST OF TONIGHT...Showers and thunderstorms in the late evening
and early morning, then a chance of showers and thunderstorms
late. Some thunderstorms may produce heavy rainfall in the late
evening and early morning. Lows in the lower 70s. South winds
5 to 10 mph. Chance of precipitation near 100 percent.
.TUESDAY...Mostly cloudy. A chance of showers and thunderstorms
through mid morning, then a slight chance of showers and
thunderstorms in the late morning and afternoon. Highs in the
upper 80s. Southwest winds 5 to 10 mph, becoming northwest in the
afternoon. Chance of precipitation 40 percent.
.TUESDAY NIGHT...Mostly cloudy. Lows around 70. North winds
around 5 mph.
.WEDNESDAY...Mostly cloudy through mid morning, then becoming
partly cloudy. Highs around 80. North winds 10 to 15 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Clear. Lows in the mid 60s.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs in the lower 80s.
.SATURDAY NIGHT...Clear. Lows around 60.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the mid 50s.
.MONDAY...Mostly sunny. Highs in the mid 70s.

$$

ILZ006-191015-
Lake IL-
Including the cities of Waukegan, Buffalo Grove, Mundelein,
and Gurnee
916 PM CDT Mon Aug 18 2025

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT TUESDAY...

.REST OF TONIGHT...Cloudy. Showers and thunderstorms likely late
in the evening, then a chance of showers and thunderstorms after
midnight. Some thunderstorms may produce heavy rainfall in the
late evening and early morning. Nearly steady temperatures in the
lower 70s. South winds 5 to 10 mph, becoming west after midnight.
Chance of precipitation 70 percent.
.TUESDAY...Mostly cloudy. Highs in the lower 80s. West winds 5 to
10 mph, becoming north in the afternoon.
.TUESDAY NIGHT...Decreasing cloudiness. Lows in the upper 60s.
North winds 5 to 10 mph.
.WEDNESDAY...Mostly cloudy in the morning, then becoming partly
cloudy. Highs in the upper 70s. North winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Sunny. Highs around 80.
.THURSDAY NIGHT...Clear. Lows in the lower 60s.
.FRIDAY...Partly cloudy. Highs in the lower 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.SATURDAY...Sunny. Highs in the upper 70s.
.SATURDAY NIGHT...Clear. Lows in the upper 50s.
.SUNDAY...Mostly sunny. Highs in the lower 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the mid 50s.
.MONDAY...Mostly sunny. Highs in the lower 70s.

$$

ILZ005-191015-
McHenry-
Including the cities of Crystal Lake, Algonquin, McHenry,
and Woodstock
916 PM CDT Mon Aug 18 2025

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT TUESDAY...

.REST OF TONIGHT...Cloudy. Showers and thunderstorms likely late
in the evening, then a chance of showers and thunderstorms after
midnight. A slight chance of showers and thunderstorms late. Some
thunderstorms may produce heavy rainfall in the late evening and
early morning. Nearly steady temperatures in the lower 70s. South
winds around 5 mph, becoming west after midnight. Chance of
precipitation 70 percent.
.TUESDAY...Mostly cloudy through mid afternoon, then becoming
partly cloudy. Highs in the lower 80s. West winds 5 to 10 mph,
becoming northwest in the afternoon.
.TUESDAY NIGHT...Mostly cloudy early in the evening, then
becoming partly cloudy. Lows in the mid 60s. North winds around
5 mph.
.WEDNESDAY...Mostly cloudy in the morning, then becoming partly
cloudy. Highs in the upper 70s. Northeast winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Clear. Lows in the upper 50s.
.FRIDAY...Partly cloudy. Highs in the lower 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.SATURDAY...Sunny. Highs in the upper 70s.
.SATURDAY NIGHT...Clear. Lows in the mid 50s.
.SUNDAY...Mostly sunny. Highs in the lower 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 50s.
.MONDAY...Mostly sunny. Highs around 70.

$$

ILZ012-191015-
Kane-
Including the cities of Aurora and Elgin
916 PM CDT Mon Aug 18 2025

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT TUESDAY...

.REST OF TONIGHT...Cloudy. Showers and thunderstorms likely late
in the evening, then a chance of showers and thunderstorms after
midnight. Some thunderstorms may produce heavy rainfall in the
late evening and early morning. Nearly steady temperatures in the
lower 70s. South winds around 5 mph, becoming southwest after
midnight. Chance of precipitation 70 percent.
.TUESDAY...Mostly cloudy through mid afternoon, then becoming
partly cloudy. A slight chance of showers and thunderstorms
through mid morning. Highs in the mid 80s. West winds 5 to
10 mph, becoming northwest in the afternoon. Chance of
precipitation 20 percent.
.TUESDAY NIGHT...Mostly cloudy early in the evening, then
becoming partly cloudy. Lows in the upper 60s. North winds around
5 mph.
.WEDNESDAY...Partly cloudy. Highs in the upper 70s. Northeast
winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Clear. Lows around 60.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.SATURDAY...Mostly sunny. Highs in the upper 70s.
.SATURDAY NIGHT...Clear. Lows in the mid 50s.
.SUNDAY...Sunny. Highs in the lower 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 50s.
.MONDAY...Mostly sunny. Highs in the lower 70s.

$$

ILZ013-191015-
DuPage-
Including the cities of Naperville, Wheaton, Downers Grove,
Lombard, and Carol Stream
916 PM CDT Mon Aug 18 2025

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT TUESDAY...

.REST OF TONIGHT...Cloudy. Showers and thunderstorms late in the
evening, then a chance of showers and thunderstorms after
midnight. Some thunderstorms may produce heavy rainfall in the
late evening and early morning. Nearly steady temperatures in the
lower 70s. Southwest winds around 5 mph. Chance of precipitation
90 percent.
.TUESDAY...Mostly cloudy. A slight chance of showers and
thunderstorms. Highs in the mid 80s. West winds 5 to 10 mph,
becoming northwest in the afternoon. Chance of precipitation
20 percent.
.TUESDAY NIGHT...Partly cloudy through the early overnight, then
becoming mostly cloudy. Lows in the upper 60s. North winds around
5 mph.
.WEDNESDAY...Partly cloudy. Highs in the upper 70s. North winds
5 to 10 mph.
.WEDNESDAY NIGHT...Partly cloudy early in the evening, then
becoming mostly clear. Lows in the mid 60s. Northeast winds 5 to
10 mph.
.THURSDAY...Sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Clear. Lows in the lower 60s.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs around 80.
.SATURDAY NIGHT...Clear. Lows in the upper 50s.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the mid 50s.
.MONDAY...Mostly sunny. Highs in the lower 70s.

$$

ILZ020-191015-
Kendall-
Including the cities of Oswego, Yorkville, and Plano
916 PM CDT Mon Aug 18 2025

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT TUESDAY...

.REST OF TONIGHT...Cloudy. Showers and thunderstorms likely late
in the evening, then a chance of showers and thunderstorms after
midnight. Some thunderstorms may produce heavy rainfall in the
late evening and early morning. Nearly steady temperatures in the
lower 70s. Southeast winds around 5 mph, becoming southwest after
midnight. Chance of precipitation 70 percent.
.TUESDAY...Mostly cloudy through mid afternoon, then becoming
partly cloudy. A slight chance of showers and thunderstorms.
Highs in the mid 80s. West winds 5 to 10 mph, becoming northwest
in the afternoon. Chance of precipitation 20 percent.
.TUESDAY NIGHT...Mostly cloudy early in the evening, then
becoming partly cloudy. Lows in the upper 60s. North winds around
5 mph.
.WEDNESDAY...Partly cloudy. Highs in the lower 80s. Northeast
winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. North winds
5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the mid 80s.
.THURSDAY NIGHT...Clear. Lows in the lower 60s.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs around 80.
.SATURDAY NIGHT...Clear. Lows in the mid 50s.
.SUNDAY...Sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 50s.
.MONDAY...Mostly sunny. Highs in the lower 70s.

$$

ILZ106-191015-
Northern Will-
Including the cities of Joliet, Bolingbrook, Plainfield,
and Mokena
916 PM CDT Mon Aug 18 2025

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT TUESDAY...

.REST OF TONIGHT...Showers and thunderstorms late in the evening,
then a chance of showers and thunderstorms after midnight. Some
thunderstorms may produce heavy rainfall in the late evening and
early morning. Lows in the lower 70s. South winds 5 to 10 mph,
becoming southwest after midnight. Chance of precipitation near
100 percent.
.TUESDAY...Mostly cloudy. A chance of showers and thunderstorms
through mid morning, then a slight chance of showers and
thunderstorms in the late morning and afternoon. Highs in the mid
80s. Southwest winds 5 to 10 mph, becoming northwest in the
afternoon. Chance of precipitation 40 percent.
.TUESDAY NIGHT...Increasing cloudiness. Lows in the upper 60s.
North winds around 5 mph.
.WEDNESDAY...Partly cloudy. Highs around 80. North winds 5 to
10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Clear. Lows in the lower 60s.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs around 80.
.SATURDAY NIGHT...Clear. Lows in the upper 50s.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the mid 50s.
.MONDAY...Mostly sunny. Highs in the lower 70s.

$$

ILZ107-191015-
Southern Will-
Including the cities of Channahon, Manhattan, and Wilmington
916 PM CDT Mon Aug 18 2025

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT TUESDAY...

.REST OF TONIGHT...Showers and thunderstorms in the late evening
and early morning, then a chance of showers and thunderstorms
late. Some thunderstorms may produce heavy rainfall in the late
evening and early morning. Lows in the lower 70s. South winds
5 to 10 mph. Chance of precipitation near 100 percent.
.TUESDAY...Mostly cloudy. A chance of showers and thunderstorms
through mid morning, then a slight chance of showers and
thunderstorms in the late morning and afternoon. Highs in the
upper 80s. Southwest winds 5 to 10 mph, becoming northwest in the
afternoon. Chance of precipitation 40 percent.
.TUESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. Lows in the upper 60s. North winds around 5 mph.
.WEDNESDAY...Partly cloudy. Highs in the lower 80s. North winds
5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the mid 80s.
.THURSDAY NIGHT...Clear. Lows in the lower 60s.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs in the lower 80s.
.SATURDAY NIGHT...Clear. Lows in the upper 50s.
.SUNDAY...Sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 50s.
.MONDAY...Mostly sunny. Highs in the mid 70s.

$$

ILZ108-191015-
Eastern Will-
Including the cities of Crete, Peotone, and Beecher
916 PM CDT Mon Aug 18 2025

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT TUESDAY...

.REST OF TONIGHT...Showers and thunderstorms in the late evening
and early morning, then a chance of showers and thunderstorms
late. Some thunderstorms may produce heavy rainfall in the late
evening and early morning. Lows in the lower 70s. South winds
5 to 10 mph. Chance of precipitation near 100 percent.
.TUESDAY...Mostly cloudy. A chance of showers and thunderstorms
through mid morning, then a slight chance of showers and
thunderstorms in the late morning and afternoon. Highs in the mid
80s. Southwest winds 5 to 10 mph, becoming northwest in the
afternoon. Chance of precipitation 50 percent.
.TUESDAY NIGHT...Partly cloudy early in the evening, then
becoming mostly cloudy. Lows in the upper 60s. North winds around
5 mph.
.WEDNESDAY...Partly cloudy through mid afternoon, then becoming
mostly sunny. Highs around 80. North winds 5 to 10 mph,
increasing to 10 to 15 mph in the afternoon.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Clear. Lows in the lower 60s.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs around 80.
.SATURDAY NIGHT...Clear. Lows in the upper 50s.
.SUNDAY...Sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 50s.
.MONDAY...Mostly sunny. Highs in the lower 70s.

$$

INZ001-191015-
Lake IN-
Including the cities of Gary, Hammond, and Merrillville
916 PM CDT Mon Aug 18 2025

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT TUESDAY...

.REST OF TONIGHT...Showers and thunderstorms in the late evening
and early morning, then a chance of showers and thunderstorms
late. Some thunderstorms may produce heavy rainfall in the late
evening and early morning. Lows in the lower 70s. South winds
5 to 10 mph. Chance of precipitation near 100 percent.
.TUESDAY...Mostly cloudy through mid afternoon, then becoming
partly cloudy. A chance of showers and thunderstorms. Highs in
the mid 80s. Southwest winds 5 to 10 mph, becoming northwest in
the afternoon. Chance of precipitation 50 percent.
.TUESDAY NIGHT...Partly cloudy early in the evening, then
becoming mostly cloudy. Lows in the upper 60s. North winds around
5 mph.
.WEDNESDAY...Partly cloudy through mid afternoon, then becoming
mostly sunny. Highs in the upper 70s. North winds 5 to 10 mph,
increasing to 10 to 15 mph in the afternoon.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Clear. Lows in the lower 60s.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs in the lower 80s.
.SATURDAY NIGHT...Clear. Lows in the upper 50s.
.SUNDAY...Sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the mid 50s.
.MONDAY...Mostly sunny. Highs in the lower 70s.

$$

INZ002-191015-
Porter-
Including the cities of Portage, Valparaiso, and Chesterton
916 PM CDT Mon Aug 18 2025

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT TUESDAY...

.REST OF TONIGHT...Showers and thunderstorms in the late evening
and early morning, then a chance of showers and thunderstorms
late. Some thunderstorms may produce heavy rainfall in the late
evening and early morning. Lows in the lower 70s. South winds
5 to 10 mph. Chance of precipitation near 100 percent.
.TUESDAY...Mostly cloudy through mid afternoon, then becoming
partly cloudy. A chance of showers and thunderstorms. Highs in
the mid 80s inland, but only in the lower 80s near the lake.
Southwest winds 5 to 10 mph, becoming northwest in the afternoon.
Chance of precipitation 50 percent.
.TUESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. Lows in the upper 60s. North winds around 5 mph.
.WEDNESDAY...Partly cloudy through mid afternoon, then becoming
mostly sunny. Highs in the upper 70s. North winds 5 to 10 mph,
increasing to 10 to 15 mph in the afternoon.
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Clear. Lows in the lower 60s.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs in the lower 80s.
.SATURDAY NIGHT...Clear. Lows in the upper 50s.
.SUNDAY...Sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the mid 50s.
.MONDAY...Mostly sunny. Highs in the lower 70s.

$$

ILZ003-191015-
Winnebago-
Including the city of Rockford
916 PM CDT Mon Aug 18 2025

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT TUESDAY...

.REST OF TONIGHT...Cloudy. Showers and thunderstorms likely late
in the evening, then a chance of showers and thunderstorms after
midnight. A slight chance of showers and thunderstorms late. Some
thunderstorms may produce heavy rainfall in the late evening and
early morning. Nearly steady temperatures in the lower 70s. South
winds around 5 mph, becoming west after midnight. Chance of
precipitation 70 percent.
.TUESDAY...Mostly cloudy through mid afternoon, then becoming
partly cloudy. Highs in the mid 80s. West winds 5 to 10 mph,
becoming northwest in the afternoon.
.TUESDAY NIGHT...Partly cloudy. Lows in the mid 60s. North winds
around 5 mph.
.WEDNESDAY...Mostly cloudy through mid morning, then becoming
partly cloudy. Highs in the upper 70s. Northeast winds 5 to
10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 50s. Northeast
winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Clear. Lows in the upper 50s.
.FRIDAY...Partly cloudy. Highs in the lower 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.SATURDAY...Sunny. Highs in the mid 70s.
.SATURDAY NIGHT...Clear. Lows in the mid 50s.
.SUNDAY...Mostly sunny. Highs in the lower 70s.
.SUNDAY NIGHT...Mostly clear. Lows around 50.
.MONDAY...Mostly sunny. Highs around 70.

$$

ILZ004-191015-
Boone-
Including the city of Belvidere
916 PM CDT Mon Aug 18 2025

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT TUESDAY...

.REST OF TONIGHT...Cloudy. Showers and thunderstorms likely late
in the evening, then a chance of showers and thunderstorms after
midnight. A slight chance of showers and thunderstorms late. Some
thunderstorms may produce heavy rainfall in the late evening and
early morning. Nearly steady temperatures in the lower 70s. South
winds around 5 mph, becoming west after midnight. Chance of
precipitation 70 percent.
.TUESDAY...Mostly cloudy through mid afternoon, then becoming
partly cloudy. Highs in the lower 80s. West winds 5 to 10 mph,
becoming northwest in the afternoon.
.TUESDAY NIGHT...Mostly cloudy early in the evening, then
becoming partly cloudy. Lows in the mid 60s. North winds around
5 mph.
.WEDNESDAY...Partly cloudy. Highs in the upper 70s. Northeast
winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear through the early overnight, then
becoming partly cloudy. Lows around 60. Northeast winds 5 to
10 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Clear. Lows in the upper 50s.
.FRIDAY...Partly cloudy. Highs in the lower 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.SATURDAY...Sunny. Highs in the mid 70s.
.SATURDAY NIGHT...Clear. Lows in the mid 50s.
.SUNDAY...Mostly sunny. Highs around 70.
.SUNDAY NIGHT...Mostly clear. Lows around 50.
.MONDAY...Mostly sunny. Highs around 70.

$$

ILZ008-191015-
Ogle-
Including the cities of Rochelle, Oregon, and Byron
916 PM CDT Mon Aug 18 2025

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT TUESDAY...

.REST OF TONIGHT...Cloudy. Showers and thunderstorms likely late
in the evening, then a chance of showers and thunderstorms after
midnight. A slight chance of showers and thunderstorms late. Some
thunderstorms may produce heavy rainfall in the late evening and
early morning. Nearly steady temperatures in the lower 70s. South
winds 5 to 10 mph, becoming west after midnight. Chance of
precipitation 70 percent.
.TUESDAY...Mostly cloudy through mid afternoon, then becoming
partly cloudy. Highs in the mid 80s. West winds 5 to 10 mph,
becoming northwest in the afternoon.
.TUESDAY NIGHT...Partly cloudy. Lows in the mid 60s. North winds
around 5 mph.
.WEDNESDAY...Partly cloudy. Highs in the upper 70s. Northeast
winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the upper 50s. Northeast
winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Clear. Lows in the upper 50s.
.FRIDAY...Partly cloudy. Highs in the lower 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.SATURDAY...Mostly sunny. Highs in the upper 70s.
.SATURDAY NIGHT...Clear. Lows in the mid 50s.
.SUNDAY...Mostly sunny. Highs in the lower 70s.
.SUNDAY NIGHT...Mostly clear. Lows around 50.
.MONDAY...Mostly sunny. Highs in the lower 70s.

$$

ILZ011-191015-
De Kalb-
Including the cities of DeKalb and Sycamore
916 PM CDT Mon Aug 18 2025

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT TUESDAY...

.REST OF TONIGHT...Cloudy. Showers and thunderstorms likely late
in the evening, then a chance of showers and thunderstorms after
midnight. A slight chance of showers and thunderstorms late. Some
thunderstorms may produce heavy rainfall in the late evening and
early morning. Nearly steady temperatures in the lower 70s. South
winds 5 to 10 mph, becoming west after midnight. Chance of
precipitation 70 percent.
.TUESDAY...Mostly cloudy through mid afternoon, then becoming
partly cloudy. Highs in the mid 80s. West winds 5 to 10 mph,
becoming northwest in the afternoon.
.TUESDAY NIGHT...Partly cloudy. Lows in the mid 60s. North winds
around 5 mph.
.WEDNESDAY...Partly cloudy. Highs in the upper 70s. Northeast
winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear through the early overnight, then
becoming partly cloudy. Lows in the lower 60s. Northeast winds
5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Clear. Lows in the upper 50s.
.FRIDAY...Partly cloudy. Highs in the lower 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.SATURDAY...Mostly sunny. Highs in the upper 70s.
.SATURDAY NIGHT...Clear. Lows in the mid 50s.
.SUNDAY...Mostly sunny. Highs in the lower 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 50s.
.MONDAY...Mostly sunny. Highs in the lower 70s.

$$

ILZ010-191015-
Lee-
Including the city of Dixon
916 PM CDT Mon Aug 18 2025

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT TUESDAY...

.REST OF TONIGHT...Cloudy. Showers and thunderstorms likely late
in the evening, then a chance of showers and thunderstorms after
midnight. A slight chance of showers and thunderstorms late. Some
thunderstorms may produce heavy rainfall in the late evening and
early morning. Nearly steady temperatures in the lower 70s. South
winds 5 to 10 mph, becoming west after midnight. Chance of
precipitation 70 percent.
.TUESDAY...Mostly cloudy in the morning, then becoming partly
cloudy. Highs in the mid 80s. West winds 5 to 10 mph, becoming
northwest in the afternoon.
.TUESDAY NIGHT...Partly cloudy. Lows in the mid 60s. North winds
around 5 mph.
.WEDNESDAY...Partly cloudy. Highs around 80. Northeast winds 5 to
10 mph.
.WEDNESDAY NIGHT...Mostly clear through the early overnight, then
becoming partly cloudy. Lows around 60. Northeast winds 5 to
10 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Clear. Lows around 60.
.FRIDAY...Mostly sunny. Highs in the lower 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.SATURDAY...Mostly sunny. Highs in the upper 70s.
.SATURDAY NIGHT...Clear. Lows in the mid 50s.
.SUNDAY...Mostly sunny. Highs in the lower 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 50s.
.MONDAY...Mostly sunny. Highs in the lower 70s.

$$

ILZ019-191015-
La Salle-
Including the cities of Ottawa, Streator, La Salle, Mendota,
and Marseilles
916 PM CDT Mon Aug 18 2025

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT TUESDAY...

.REST OF TONIGHT...Cloudy. Showers and thunderstorms likely late
in the evening, then a chance of showers and thunderstorms after
midnight. Some thunderstorms may produce heavy rainfall in the
late evening and early morning. Lows in the lower 70s. South
winds 5 to 10 mph, becoming southwest after midnight. Chance of
precipitation 70 percent.
.TUESDAY...Mostly cloudy through mid afternoon, then becoming
partly cloudy. A chance of showers and thunderstorms through mid
morning. A slight chance of showers and thunderstorms in the late
morning and afternoon. Highs in the upper 80s. West winds 5 to
10 mph. Chance of precipitation 40 percent.
.TUESDAY NIGHT...Mostly cloudy early in the evening, then
becoming partly cloudy. Lows in the upper 60s. North winds around
5 mph.
.WEDNESDAY...Partly cloudy. Highs in the lower 80s. Northeast
winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear through the early overnight, then
becoming partly cloudy. Lows in the lower 60s. Northeast winds
5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Clear. Lows in the lower 60s.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs in the upper 70s.
.SATURDAY NIGHT...Clear. Lows in the mid 50s.
.SUNDAY...Sunny. Highs in the lower 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 50s.
.MONDAY...Mostly sunny. Highs in the lower 70s.

$$

ILZ021-191015-
Grundy-
Including the cities of Morris, Coal City, and Minooka
916 PM CDT Mon Aug 18 2025

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT TUESDAY...

.REST OF TONIGHT...Showers and thunderstorms in the late evening
and early morning, then a chance of showers and thunderstorms
late. Some thunderstorms may produce heavy rainfall in the late
evening and early morning. Lows in the lower 70s. South winds
around 5 mph. Chance of precipitation near 100 percent.
.TUESDAY...Mostly cloudy through mid afternoon, then becoming
partly cloudy. A chance of showers and thunderstorms through mid
morning, then a slight chance of showers and thunderstorms in the
late morning and afternoon. Highs in the upper 80s. West winds
5 to 10 mph. Chance of precipitation 40 percent.
.TUESDAY NIGHT...Partly cloudy. Lows in the upper 60s. North
winds around 5 mph.
.WEDNESDAY...Partly cloudy. Highs in the lower 80s. Northeast
winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. North winds
5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the mid 80s.
.THURSDAY NIGHT...Clear. Lows in the lower 60s.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs around 80.
.SATURDAY NIGHT...Clear. Lows in the upper 50s.
.SUNDAY...Sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 50s.
.MONDAY...Mostly sunny. Highs in the lower 70s.

$$

ILZ032-191015-
Livingston-
Including the cities of Pontiac, Dwight, and Fairbury
916 PM CDT Mon Aug 18 2025

.REST OF TONIGHT...Showers and thunderstorms in the late evening
and early morning, then a chance of showers and thunderstorms
late. Lows in the lower 70s. Southwest winds around 5 mph. Chance
of precipitation near 100 percent.
.TUESDAY...Mostly cloudy through mid afternoon, then becoming
partly cloudy. A chance of showers and thunderstorms through mid
morning, then a slight chance of showers and thunderstorms in the
late morning and afternoon. Highs in the upper 80s. West winds
around 5 mph. Chance of precipitation 50 percent.
.TUESDAY NIGHT...Partly cloudy early in the evening, then
becoming mostly cloudy. Lows in the upper 60s. North winds around
5 mph.
.WEDNESDAY...Mostly cloudy through mid morning, then becoming
partly cloudy. Highs in the lower 80s. Northeast winds 5 to
10 mph.
.WEDNESDAY NIGHT...Mostly clear in the evening, then becoming
partly cloudy. Lows in the lower 60s. Northeast winds 5 to
10 mph.
.THURSDAY...Mostly sunny. Highs in the mid 80s.
.THURSDAY NIGHT...Clear. Lows in the lower 60s.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs in the lower 80s.
.SATURDAY NIGHT...Clear. Lows in the mid 50s.
.SUNDAY...Sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 50s.
.MONDAY...Mostly sunny. Highs in the lower 70s.

$$

ILZ023-191015-
Kankakee-
Including the cities of Kankakee, Bourbonnais, and Bradley
916 PM CDT Mon Aug 18 2025

...FLOOD WATCH IN EFFECT UNTIL 4 AM CDT TUESDAY...

.REST OF TONIGHT...Showers and thunderstorms in the late evening
and early morning, then a chance of showers and thunderstorms
late. Some thunderstorms may produce heavy rainfall in the late
evening and early morning. Lows in the lower 70s. South winds
5 to 10 mph. Chance of precipitation near 100 percent.
.TUESDAY...Mostly cloudy through mid afternoon, then becoming
partly cloudy. A chance of showers and thunderstorms through mid
morning, then a slight chance of showers and thunderstorms in the
late morning and afternoon. Highs in the upper 80s. Southwest
winds 5 to 10 mph, becoming northwest in the afternoon. Chance of
precipitation 50 percent.
.TUESDAY NIGHT...Partly cloudy early in the evening, then
becoming mostly cloudy. Lows in the upper 60s. North winds around
5 mph.
.WEDNESDAY...Partly cloudy through mid afternoon, then becoming
mostly sunny. Highs in the lower 80s. North winds 5 to 10 mph,
increasing to 10 to 15 mph in the afternoon.
.WEDNESDAY NIGHT...Mostly clear. Lows in the mid 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Clear. Lows in the lower 60s.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.SATURDAY...Mostly sunny. Highs in the lower 80s.
.SATURDAY NIGHT...Clear. Lows in the mid 50s.
.SUNDAY...Sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 50s.
.MONDAY...Mostly sunny. Highs in the mid 70s.

$$

ILZ039-191015-
Ford-
Including the cities of Paxton and Gibson City
916 PM CDT Mon Aug 18 2025

.REST OF TONIGHT...A chance of showers and thunderstorms late in
the evening, then showers and thunderstorms likely in the late
evening and early morning. A chance of showers and thunderstorms
late. Lows in the lower 70s. South winds around 5 mph. Chance of
precipitation 70 percent.
.TUESDAY...Mostly cloudy. A chance of showers and thunderstorms
through mid morning, then a slight chance of showers and
thunderstorms in the late morning and afternoon. Highs in the
upper 80s. Southwest winds 5 to 10 mph, becoming northwest in the
afternoon. Chance of precipitation 50 percent.
.TUESDAY NIGHT...Partly cloudy early in the evening, then
becoming mostly cloudy. Lows in the upper 60s. North winds around
5 mph.
.WEDNESDAY...Mostly cloudy through mid morning, then becoming
partly cloudy. Highs in the lower 80s. North winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear early in the evening, then
becoming partly cloudy. Lows in the mid 60s. North winds 5 to
10 mph.
.THURSDAY...Mostly sunny. Highs in the mid 80s.
.THURSDAY NIGHT...Clear. Lows in the lower 60s.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs in the lower 80s.
.SATURDAY NIGHT...Clear. Lows in the mid 50s.
.SUNDAY...Sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 50s.
.MONDAY...Mostly sunny. Highs in the mid 70s.

$$

ILZ033-191015-
Iroquois-
Including the cities of Watseka and Gilman
916 PM CDT Mon Aug 18 2025

.REST OF TONIGHT...Showers and thunderstorms likely in the late
evening and early morning, then a chance of showers and
thunderstorms late. Lows in the lower 70s. South winds 5 to
10 mph. Chance of precipitation 70 percent.
.TUESDAY...Mostly cloudy. A chance of showers and thunderstorms
through mid morning, then a slight chance of showers and
thunderstorms late in the morning. A chance of showers and
thunderstorms in the afternoon. Highs in the upper 80s. West
winds around 5 mph. Chance of precipitation 50 percent.
.TUESDAY NIGHT...Partly cloudy early in the evening, then
becoming mostly cloudy. Lows in the upper 60s. North winds around
5 mph.
.WEDNESDAY...Mostly cloudy through mid morning, then becoming
partly cloudy. Highs in the lower 80s. North winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear early in the evening, then
becoming partly cloudy. Lows in the lower 60s. North winds 5 to
10 mph.
.THURSDAY...Mostly sunny. Highs in the mid 80s.
.THURSDAY NIGHT...Clear. Lows around 60.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.SATURDAY...Mostly sunny. Highs in the lower 80s.
.SATURDAY NIGHT...Clear. Lows in the mid 50s.
.SUNDAY...Sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 50s.
.MONDAY...Mostly sunny. Highs in the mid 70s.

$$

INZ010-191015-
Newton-
Including the cities of Roselawn, Kentland, and Morocco
916 PM CDT Mon Aug 18 2025

.REST OF TONIGHT...Showers and thunderstorms likely in the late
evening and early morning, then a chance of showers and
thunderstorms late. Lows around 70. South winds 5 to 10 mph.
Chance of precipitation 70 percent.
.TUESDAY...Mostly cloudy through mid afternoon, then becoming
partly cloudy. A chance of showers and thunderstorms. Highs in
the upper 80s. Southwest winds around 5 mph, becoming west in the
afternoon. Chance of precipitation 50 percent.
.TUESDAY NIGHT...Partly cloudy early in the evening, then
becoming mostly cloudy. Lows in the upper 60s. North winds around
5 mph.
.WEDNESDAY...Mostly cloudy through mid morning, then clearing.
Highs in the lower 80s. North winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Clear. Lows in the lower 60s.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.SATURDAY...Mostly sunny. Highs in the lower 80s.
.SATURDAY NIGHT...Clear. Lows in the mid 50s.
.SUNDAY...Sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Clear. Lows in the lower 50s.
.MONDAY...Mostly sunny. Highs in the mid 70s.

$$

INZ011-191015-
Jasper-
Including the cities of Rensselaer and DeMotte
916 PM CDT Mon Aug 18 2025

.REST OF TONIGHT...Showers and thunderstorms likely. Lows around
70. South winds around 5 mph. Chance of precipitation 70 percent.
.TUESDAY...Mostly cloudy through mid afternoon, then becoming
partly cloudy. A chance of showers and thunderstorms. Highs in
the mid 80s. Southwest winds around 5 mph, becoming west in the
afternoon. Chance of precipitation 50 percent.
.TUESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. A slight chance of showers and thunderstorms in
the evening. Lows in the upper 60s. North winds around 5 mph.
Chance of precipitation 20 percent.
.WEDNESDAY...Mostly cloudy through mid morning, then becoming
partly cloudy. Highs in the lower 80s. North winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear. Lows in the lower 60s. Northeast
winds 5 to 10 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Clear. Lows in the lower 60s.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.SATURDAY...Mostly sunny. Highs in the lower 80s.
.SATURDAY NIGHT...Clear. Lows in the mid 50s.
.SUNDAY...Sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Clear. Lows in the lower 50s.
.MONDAY...Mostly sunny. Highs in the lower 70s.

$$

INZ019-191015-
Benton-
Including the cities of Fowler and Oxford
1016 PM EDT Mon Aug 18 2025

.REST OF TONIGHT...A chance of showers and thunderstorms late in
the evening, then showers and thunderstorms likely in the late
evening and overnight. Lows in the lower 70s. South winds around
5 mph. Chance of precipitation 60 percent.
.TUESDAY...Mostly cloudy. A chance of showers and thunderstorms.
Highs in the upper 80s. West winds around 5 mph. Chance of
precipitation 50 percent.
.TUESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. A slight chance of showers and thunderstorms in
the evening. Lows in the upper 60s. North winds around 5 mph.
Chance of precipitation 20 percent.
.WEDNESDAY...Mostly cloudy through mid morning, then becoming
partly cloudy. Highs in the lower 80s. North winds 5 to 10 mph.
.WEDNESDAY NIGHT...Mostly clear early in the evening, then
becoming partly cloudy. Lows in the mid 60s. North winds 5 to
10 mph.
.THURSDAY...Mostly sunny. Highs in the lower 80s.
.THURSDAY NIGHT...Clear. Lows in the lower 60s.
.FRIDAY...Mostly sunny. Highs in the mid 80s.
.FRIDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.SATURDAY...Mostly sunny. Highs in the lower 80s.
.SATURDAY NIGHT...Clear. Lows in the mid 50s.
.SUNDAY...Sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the lower 50s.
.MONDAY...Mostly sunny. Highs in the mid 70s.

$$