231
FPUS53 KLOT 210142
ZFPLOT

Zone Forecast Product
National Weather Service Chicago/Romeoville, IL
841 PM CDT Thu Aug 20 2026

ILZ104-211600-
Central Cook-
Including the cities of Chicago, Cicero, Oak Lawn, Oak Park,
and La Grange
841 PM CDT Thu Aug 20 2026

.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Lows in the lower 60s. Northeast winds around 5 mph,
becoming west after midnight.
.FRIDAY...Mostly cloudy. A slight chance of showers and
thunderstorms late. Highs around 80. Southwest winds 5 to 10 mph.
Chance of precipitation 20 percent.
.FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms in the evening, then a slight chance of showers
after midnight. Lows in the mid 60s. Southwest winds 5 to 10 mph.
Chance of precipitation 50 percent.
.SATURDAY...Partly cloudy in the morning, then clearing. Highs in
the upper 70s. Northwest winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly clear. Lows in the lower 60s. North
winds 5 to 10 mph.
.SUNDAY...Mostly sunny in the morning, then becoming partly
cloudy. Highs in the mid 70s.
.SUNDAY NIGHT...Partly cloudy. Lows around 60.
.MONDAY...Partly cloudy in the morning, then becoming mostly
cloudy. Highs in the mid 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.TUESDAY...Partly cloudy in the morning, then becoming mostly
cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Mostly cloudy. A chance of showers after
midnight. Lows in the mid 60s. Chance of precipitation
30 percent.
.WEDNESDAY...Mostly cloudy in the morning, then becoming partly
cloudy. Highs around 80.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.THURSDAY...Partly cloudy. Highs in the upper 70s.

$$

ILZ103-211600-
Northern Cook-
Including the cities of Evanston, Des Plaines, Schaumburg,
Palatine, and Northbrook
841 PM CDT Thu Aug 20 2026

.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Lows in the lower 60s. Northeast winds around 5 mph,
becoming southwest after midnight.
.FRIDAY...Mostly cloudy. A slight chance of showers and
thunderstorms early in the afternoon. A chance of showers and
thunderstorms late. Highs around 80. Southwest winds 5 to 10 mph.
Chance of precipitation 50 percent.
.FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms in the evening. Lows in the mid 60s. Southwest
winds around 5 mph. Chance of precipitation 50 percent.
.SATURDAY...Partly cloudy in the morning, then clearing. Highs in
the upper 70s. Northwest winds 5 to 10 mph, increasing to 10 to
15 mph in the afternoon.
.SATURDAY NIGHT...Mostly clear. Lows around 60. North winds
around 5 mph.
.SUNDAY...Mostly sunny in the morning, then becoming partly
cloudy. Highs in the mid 70s.
.SUNDAY NIGHT...Partly cloudy. Lows in the upper 50s.
.MONDAY...Partly cloudy in the morning, then becoming mostly
cloudy. Highs in the mid 70s.
.MONDAY NIGHT...Partly cloudy. Lows around 60.
.TUESDAY...Partly cloudy in the morning, then becoming mostly
cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Mostly cloudy. A chance of showers after
midnight. Lows in the mid 60s. Chance of precipitation
30 percent.
.WEDNESDAY...Partly cloudy. Highs around 80.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.THURSDAY...Partly cloudy. Highs in the upper 70s.

$$

ILZ105-211600-
Southern Cook-
Including the cities of Calumet City, Oak Forest, Lemont,
Orland Park, and Park Forest
841 PM CDT Thu Aug 20 2026

.TONIGHT...Clear in the evening, then becoming partly cloudy.
Lows around 60. Northeast winds around 5 mph in the evening,
becoming light and variable.
.FRIDAY...Mostly cloudy. A slight chance of showers and
thunderstorms late. Highs in the upper 70s. Southwest winds 5 to
10 mph. Chance of precipitation 20 percent.
.FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms in the evening, then a slight chance of showers
after midnight. Lows in the mid 60s. Southwest winds around
5 mph. Chance of precipitation 50 percent.
.SATURDAY...Partly cloudy in the morning, then clearing. Highs in
the upper 70s. Northwest winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly clear. Lows around 60. Northwest winds
5 to 10 mph.
.SUNDAY...Mostly sunny in the morning, then becoming partly
cloudy. Highs in the mid 70s.
.SUNDAY NIGHT...Partly cloudy. Lows in the upper 50s.
.MONDAY...Partly cloudy. Highs in the mid 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the upper 50s.
.TUESDAY...Partly cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Mostly cloudy. Lows in the mid 60s.
.WEDNESDAY...Mostly cloudy in the morning, then becoming partly
cloudy. Highs around 80.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.THURSDAY...Partly cloudy. Highs in the upper 70s.

$$

ILZ006-211600-
Lake IL-
Including the cities of Waukegan, Buffalo Grove, Mundelein,
and Gurnee
841 PM CDT Thu Aug 20 2026

.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Lows in the upper 50s. Northeast winds around 5 mph,
becoming southwest after midnight.
.FRIDAY...Mostly cloudy. A chance of showers and thunderstorms in
the afternoon. Highs in the upper 70s. Southwest winds 5 to
10 mph. Chance of precipitation 50 percent.
.FRIDAY NIGHT...Mostly cloudy. Showers and thunderstorms likely
early in the evening, then a chance of showers and thunderstorms
late in the evening. Lows in the lower 60s. West winds 5 to
10 mph. Chance of precipitation 60 percent.
.SATURDAY...Partly cloudy in the morning, then clearing. Highs in
the upper 70s. Northwest winds 5 to 10 mph, increasing to 10 to
15 mph in the afternoon.
.SATURDAY NIGHT...Mostly clear. Lows in the upper 50s. North
winds 5 to 10 mph.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.MONDAY...Partly cloudy. Highs in the mid 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the upper 50s.
.TUESDAY...Partly cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Mostly cloudy. A chance of showers after
midnight. Lows in the lower 60s. Chance of precipitation
30 percent.
.WEDNESDAY...Partly cloudy. Highs around 80.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.THURSDAY...Partly cloudy. Highs in the upper 70s.

$$

ILZ005-211600-
McHenry-
Including the cities of Crystal Lake, Algonquin, McHenry,
and Woodstock
841 PM CDT Thu Aug 20 2026

.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Lows in the upper 50s. East winds around 5 mph, becoming
southwest after midnight.
.FRIDAY...Mostly cloudy. A slight chance of showers late in the
morning. A chance of showers and thunderstorms early in the
afternoon, then showers and thunderstorms likely late. More humid
with highs in the upper 70s. Southwest winds 5 to 10 mph. Chance
of precipitation 70 percent.
.FRIDAY NIGHT...Mostly cloudy. Showers and thunderstorms likely
early in the evening, then a slight chance of showers and
thunderstorms late in the evening. Lows in the lower 60s.
Southwest winds around 5 mph, becoming northwest after midnight.
Chance of precipitation 60 percent.
.SATURDAY...Partly cloudy in the morning, then clearing. Highs in
the upper 70s. Northwest winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly clear. Lows in the mid 50s. North winds
around 5 mph.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.MONDAY...Partly cloudy. Highs in the mid 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the upper 50s.
.TUESDAY...Partly cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Mostly cloudy. A chance of showers after
midnight. Lows in the lower 60s. Chance of precipitation
30 percent.
.WEDNESDAY...Partly cloudy. Highs in the upper 70s.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.THURSDAY...Mostly sunny in the morning, then becoming partly
cloudy. Highs in the upper 70s.

$$

ILZ012-211600-
Kane-
Including the cities of Aurora and Elgin
841 PM CDT Thu Aug 20 2026

.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Lows in the upper 50s. East winds around 5 mph in the
evening, becoming light and variable.
.FRIDAY...Mostly cloudy. A chance of showers and thunderstorms in
the afternoon. Highs in the upper 70s. Southwest winds 5 to
10 mph. Chance of precipitation 50 percent.
.FRIDAY NIGHT...Mostly cloudy. Showers and thunderstorms likely
early in the evening, then a chance of showers and thunderstorms
late in the evening. Lows in the lower 60s. Southwest winds
around 5 mph, becoming west after midnight. Chance of
precipitation 60 percent.
.SATURDAY...Partly cloudy in the morning, then clearing. Highs in
the upper 70s. Northwest winds 5 to 10 mph, increasing to 10 to
15 mph in the afternoon.
.SATURDAY NIGHT...Mostly clear. Lows in the upper 50s. North
winds around 5 mph.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.MONDAY...Partly cloudy. Highs in the mid 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the upper 50s.
.TUESDAY...Partly cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Partly cloudy in the evening, then mostly cloudy
with a chance of showers after midnight. Lows in the lower 60s.
Chance of precipitation 30 percent.
.WEDNESDAY...Partly cloudy. Highs in the upper 70s.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.THURSDAY...Mostly sunny in the morning, then becoming partly
cloudy. Highs in the upper 70s.

$$

ILZ013-211600-
DuPage-
Including the cities of Naperville, Wheaton, Downers Grove,
Lombard, and Carol Stream
841 PM CDT Thu Aug 20 2026

.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Lows around 60. Northeast winds around 5 mph in the
evening, becoming light and variable.
.FRIDAY...Mostly cloudy. A slight chance of showers and
thunderstorms early in the afternoon. A chance of showers and
thunderstorms late. Highs around 80. Southwest winds 5 to 10 mph.
Chance of precipitation 50 percent.
.FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms in the evening. Lows in the mid 60s. Southwest
winds around 5 mph. Chance of precipitation 50 percent.
.SATURDAY...Partly cloudy in the morning, then clearing. Highs in
the upper 70s. Northwest winds 10 to 15 mph.
.SATURDAY NIGHT...Mostly clear. Lows around 60. North winds 5 to
10 mph.
.SUNDAY...Mostly sunny in the morning, then becoming partly
cloudy. Highs in the mid 70s.
.SUNDAY NIGHT...Partly cloudy. Lows in the upper 50s.
.MONDAY...Partly cloudy. Highs in the mid 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the upper 50s.
.TUESDAY...Partly cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Mostly cloudy. A chance of showers after
midnight. Lows in the mid 60s. Chance of precipitation
30 percent.
.WEDNESDAY...Mostly cloudy in the morning, then becoming partly
cloudy. Highs around 80.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the mid 60s.
.THURSDAY...Partly cloudy. Highs in the upper 70s.

$$

ILZ020-211600-
Kendall-
Including the cities of Oswego, Yorkville, and Plano
841 PM CDT Thu Aug 20 2026

.TONIGHT...Mostly clear. Lows in the upper 50s. East winds around
5 mph in the evening, becoming light and variable.
.FRIDAY...Mostly cloudy. A slight chance of showers and
thunderstorms early in the afternoon. A chance of showers and
thunderstorms late. Highs in the upper 70s. Southwest winds 5 to
10 mph. Chance of precipitation 50 percent.
.FRIDAY NIGHT...Mostly cloudy. Showers and thunderstorms likely
early in the evening, then a chance of showers and thunderstorms
late in the evening. Lows in the lower 60s. Southwest winds
around 5 mph. Chance of precipitation 60 percent.
.SATURDAY...Partly cloudy in the morning, then clearing. Highs in
the upper 70s. Northwest winds 10 to 15 mph.
.SATURDAY NIGHT...Clear. Lows in the upper 50s. Northwest winds
5 to 10 mph.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.MONDAY...Partly cloudy. Highs in the mid 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the upper 50s.
.TUESDAY...Partly cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Partly cloudy in the evening, then mostly cloudy
with a chance of showers after midnight. Lows in the lower 60s.
Chance of precipitation 30 percent.
.WEDNESDAY...Partly cloudy. Highs around 80.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.THURSDAY...Mostly sunny in the morning, then becoming partly
cloudy. Highs in the upper 70s.

$$

ILZ106-211600-
Northern Will-
Including the cities of Joliet, Bolingbrook, Plainfield,
and Mokena
841 PM CDT Thu Aug 20 2026

.TONIGHT...Mostly clear. Lows in the upper 50s. Northeast winds
around 5 mph in the evening, becoming light and variable.
.FRIDAY...Mostly cloudy. A chance of showers and thunderstorms
late. Highs in the upper 70s. Southwest winds 5 to 10 mph. Chance
of precipitation 40 percent.
.FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms in the evening. Lows in the mid 60s. Southwest
winds around 5 mph. Chance of precipitation 50 percent.
.SATURDAY...Partly cloudy in the morning, then clearing. Highs in
the upper 70s. Northwest winds 5 to 10 mph, increasing to 10 to
15 mph in the afternoon.
.SATURDAY NIGHT...Clear. Lows in the upper 50s. Northwest winds
around 5 mph.
.SUNDAY...Mostly sunny in the morning, then becoming partly
cloudy. Highs in the mid 70s.
.SUNDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.MONDAY...Partly cloudy. Highs in the mid 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the upper 50s.
.TUESDAY...Partly cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Partly cloudy in the evening, then mostly cloudy
with a chance of showers after midnight. Lows in the lower 60s.
Chance of precipitation 30 percent.
.WEDNESDAY...Mostly cloudy in the morning, then becoming partly
cloudy. Highs around 80.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.THURSDAY...Partly cloudy. Highs in the upper 70s.

$$

ILZ107-211600-
Southern Will-
Including the cities of Channahon, Manhattan, and Wilmington
841 PM CDT Thu Aug 20 2026

.TONIGHT...Mostly clear. Lows in the upper 50s. Northeast winds
around 5 mph in the evening, becoming light and variable.
.FRIDAY...Mostly cloudy in the morning, then becoming partly
cloudy. A slight chance of showers and thunderstorms late. Highs
around 80. Southwest winds 5 to 10 mph. Chance of precipitation
20 percent.
.FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms in the evening. Lows in the lower 60s. Southwest
winds around 5 mph. Chance of precipitation 50 percent.
.SATURDAY...Partly cloudy in the morning, then clearing. Highs in
the upper 70s. Northwest winds 5 to 10 mph.
.SATURDAY NIGHT...Clear. Lows in the upper 50s. Northwest winds
around 5 mph.
.SUNDAY...Mostly sunny in the morning, then becoming partly
cloudy. Highs in the mid 70s.
.SUNDAY NIGHT...Partly cloudy in the evening, then clearing. Lows
in the mid 50s.
.MONDAY...Partly cloudy. Highs in the mid 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the upper 50s.
.TUESDAY...Partly cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. Lows in the lower 60s.
.WEDNESDAY...Mostly cloudy in the morning, then becoming partly
cloudy. Highs around 80.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.THURSDAY...Partly cloudy. Highs around 80.

$$

ILZ108-211600-
Eastern Will-
Including the cities of Crete, Peotone, and Beecher
841 PM CDT Thu Aug 20 2026

.TONIGHT...Clear in the evening, then becoming partly cloudy.
Lows in the upper 50s. Northeast winds around 5 mph in the
evening, becoming light and variable.
.FRIDAY...Mostly cloudy. A slight chance of showers and
thunderstorms late. Highs in the upper 70s. Southwest winds
around 5 mph. Chance of precipitation 20 percent.
.FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms early in the evening, then showers and
thunderstorms likely late in the evening. A slight chance of
showers after midnight. Lows in the lower 60s. Southwest winds
around 5 mph. Chance of precipitation 60 percent.
.SATURDAY...Partly cloudy in the morning, then clearing. Highs in
the upper 70s. Northwest winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly clear. Lows in the upper 50s. Northwest
winds around 5 mph.
.SUNDAY...Mostly sunny in the morning, then becoming partly
cloudy. Highs in the mid 70s.
.SUNDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.MONDAY...Partly cloudy. Highs in the mid 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.TUESDAY...Partly cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. Lows in the lower 60s.
.WEDNESDAY...Mostly cloudy in the morning, then becoming partly
cloudy. Highs in the upper 70s.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.THURSDAY...Partly cloudy. Highs in the upper 70s.

$$

INZ001-211600-
Lake IN-
Including the cities of Gary, Hammond, and Merrillville
841 PM CDT Thu Aug 20 2026

.TONIGHT...Clear in the evening, then becoming partly cloudy.
Lows in the upper 50s. North winds around 5 mph in the evening,
becoming light and variable.
.FRIDAY...Mostly cloudy. Highs in the upper 70s. Southwest winds
around 5 mph.
.FRIDAY NIGHT...Mostly cloudy. A chance of thunderstorms in the
evening. A chance of showers until early morning. A slight chance
of thunderstorms after midnight. Lows in the lower 60s. Southwest
winds around 5 mph. Chance of precipitation 50 percent.
.SATURDAY...Mostly cloudy in the morning, then clearing. Highs in
the upper 70s. Northwest winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly clear. Lows in the upper 50s. Northwest
winds around 5 mph.
.SUNDAY...Mostly sunny. Highs in the lower 70s.
.SUNDAY NIGHT...Mostly clear in the evening, then becoming partly
cloudy. Lows in the mid 50s.
.MONDAY...Partly cloudy. Highs in the lower 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.TUESDAY...Partly cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. Lows in the lower 60s.
.WEDNESDAY...Mostly cloudy in the morning, then partly cloudy
with a chance of showers in the afternoon. Highs in the upper
70s. Chance of precipitation 30 percent.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.THURSDAY...Partly cloudy. Highs in the upper 70s.

$$

INZ002-211600-
Porter-
Including the cities of Portage, Valparaiso, and Chesterton
841 PM CDT Thu Aug 20 2026

.TONIGHT...Clear in the evening, then becoming partly cloudy.
Lows in the upper 50s. North winds around 5 mph, becoming west
after midnight.
.FRIDAY...Mostly cloudy. Highs in the upper 70s. South winds
around 5 mph.
.FRIDAY NIGHT...Mostly cloudy. A chance of thunderstorms in the
evening. A chance of showers. A slight chance of thunderstorms
after midnight. Lows in the lower 60s. Southwest winds around
5 mph. Chance of precipitation 50 percent.
.SATURDAY...Mostly cloudy in the morning, then clearing. Highs in
the mid 70s. Northwest winds 10 to 15 mph, becoming north 5 to
10 mph in the afternoon.
.SATURDAY NIGHT...Mostly clear. A slight chance of showers. Lows
in the upper 50s. Northwest winds 5 to 10 mph. Chance of
precipitation 20 percent.
.SUNDAY...Mostly sunny. Highs in the lower 70s.
.SUNDAY NIGHT...Mostly clear. Lows in the mid 50s.
.MONDAY...Partly cloudy. Highs in the lower 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.TUESDAY...Partly cloudy. Highs in the mid 70s.
.TUESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. Lows in the lower 60s.
.WEDNESDAY...Mostly cloudy in the morning, then becoming partly
cloudy. A chance of showers in the afternoon. Highs in the upper
70s. Chance of precipitation 30 percent.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.THURSDAY...Partly cloudy. Highs in the upper 70s.

$$

ILZ003-211600-
Winnebago-
Including the city of Rockford
841 PM CDT Thu Aug 20 2026

.TONIGHT...Mostly clear in the evening, then becoming mostly
cloudy. Lows in the upper 50s. South winds around 5 mph.
.FRIDAY...Mostly cloudy. A chance of showers with a slight chance
of thunderstorms in the morning, then showers and thunderstorms
likely in the afternoon. Highs around 80. Southwest winds 5 to
10 mph. Chance of precipitation 70 percent.
.FRIDAY NIGHT...Mostly cloudy in the evening, then becoming
partly cloudy. A chance of showers and thunderstorms early in the
evening. Lows in the lower 60s. Southwest winds around 5 mph,
becoming northwest after midnight. Chance of precipitation
50 percent.
.SATURDAY...Mostly sunny. Highs in the upper 70s. Northwest winds
5 to 10 mph, increasing to 10 to 15 mph in the afternoon.
.SATURDAY NIGHT...Mostly clear. Lows in the mid 50s. North winds
around 5 mph.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Partly cloudy. Lows in the lower 50s.
.MONDAY...Partly cloudy. Highs in the mid 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.TUESDAY...Partly cloudy in the morning, then becoming mostly
cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Mostly cloudy. A chance of showers after
midnight. Lows in the lower 60s. Chance of precipitation
30 percent.
.WEDNESDAY...Partly cloudy. Highs around 80.
.WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Lows around 60.
.THURSDAY...Mostly sunny in the morning, then becoming partly
cloudy. Highs in the upper 70s.

$$

ILZ004-211600-
Boone-
Including the city of Belvidere
841 PM CDT Thu Aug 20 2026

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

$$

ILZ008-211600-
Ogle-
Including the cities of Rochelle, Oregon, and Byron
841 PM CDT Thu Aug 20 2026

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

$$

ILZ011-211600-
De Kalb-
Including the cities of DeKalb and Sycamore
841 PM CDT Thu Aug 20 2026

.TONIGHT...Mostly clear in the evening, then becoming partly
cloudy. Lows in the upper 50s. East winds around 5 mph, becoming
south after midnight.
.FRIDAY...Mostly cloudy. A chance of showers and thunderstorms
early in the afternoon. Showers and thunderstorms likely late.
Highs around 80. Southwest winds 5 to 10 mph. Chance of
precipitation 70 percent.
.FRIDAY NIGHT...Mostly cloudy. Showers and thunderstorms likely
early in the evening, then a slight chance of showers and
thunderstorms late in the evening. Lows in the lower 60s.
Southwest winds around 5 mph, becoming northwest after midnight.
Chance of precipitation 60 percent.
.SATURDAY...Partly cloudy in the morning, then becoming mostly
sunny. Highs in the upper 70s. Northwest winds 10 to 15 mph.
.SATURDAY NIGHT...Clear. Lows in the mid 50s. North winds 5 to
10 mph.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.MONDAY...Partly cloudy. Highs in the mid 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the upper 50s.
.TUESDAY...Partly cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Partly cloudy in the evening, then mostly cloudy
with a chance of showers after midnight. Lows in the lower 60s.
Chance of precipitation 30 percent.
.WEDNESDAY...Partly cloudy. Highs around 80.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.THURSDAY...Mostly sunny in the morning, then becoming partly
cloudy. Highs in the upper 70s.

$$

ILZ010-211600-
Lee-
Including the city of Dixon
841 PM CDT Thu Aug 20 2026

.TONIGHT...Clear in the evening, then becoming partly cloudy.
Lows in the upper 50s. East winds around 5 mph, becoming south
after midnight.
.FRIDAY...Mostly cloudy. A slight chance of showers late in the
morning. A chance of showers and thunderstorms early in the
afternoon, then showers and thunderstorms likely late. Highs
around 80. Southwest winds 5 to 10 mph. Chance of precipitation
70 percent.
.FRIDAY NIGHT...Mostly cloudy in the evening, then becoming
partly cloudy. Showers and thunderstorms likely early in the
evening, then a slight chance of showers and thunderstorms late
in the evening. Lows in the lower 60s. Southwest winds around
5 mph, becoming northwest after midnight. Chance of precipitation
60 percent.
.SATURDAY...Mostly sunny. Highs in the upper 70s. Northwest winds
10 to 15 mph, diminishing to 5 to 10 mph in the afternoon.
.SATURDAY NIGHT...Clear. Lows in the mid 50s. North winds 5 to
10 mph.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.MONDAY...Partly cloudy. Highs in the mid 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the upper 50s.
.TUESDAY...Partly cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. A chance of showers after midnight. Lows in the
lower 60s. Chance of precipitation 30 percent.
.WEDNESDAY...Partly cloudy. Highs around 80.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.THURSDAY...Mostly sunny in the morning, then becoming partly
cloudy. Highs in the upper 70s.

$$

ILZ019-211600-
La Salle-
Including the cities of Ottawa, Streator, La Salle, Mendota,
and Marseilles
841 PM CDT Thu Aug 20 2026

.TONIGHT...Mostly clear. Lows in the upper 50s. Northeast winds
around 5 mph in the evening, becoming light and variable.
.FRIDAY...Partly cloudy. A slight chance of showers and
thunderstorms early in the afternoon. A chance of showers and
thunderstorms late. Highs around 80. Southwest winds 5 to 10 mph.
Chance of precipitation 50 percent.
.FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms in the evening. Lows in the mid 60s. West winds
5 to 10 mph. Chance of precipitation 50 percent.
.SATURDAY...Partly cloudy in the morning, then becoming mostly
sunny. Highs in the upper 70s. Northwest winds 5 to 10 mph.
.SATURDAY NIGHT...Clear. Lows in the upper 50s. Northwest winds
5 to 10 mph.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.MONDAY...Partly cloudy. Highs in the mid 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the upper 50s.
.TUESDAY...Mostly sunny in the morning, then becoming partly
cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. A chance of showers after midnight. Lows in the
mid 60s. Chance of precipitation 30 percent.
.WEDNESDAY...Partly cloudy. Highs around 80.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.THURSDAY...Mostly sunny in the morning, then becoming partly
cloudy. Highs in the upper 70s.

$$

ILZ021-211600-
Grundy-
Including the cities of Morris, Coal City, and Minooka
841 PM CDT Thu Aug 20 2026

.TONIGHT...Mostly clear. Lows in the upper 50s. East winds around
5 mph in the evening, becoming light and variable.
.FRIDAY...Mostly cloudy in the morning, then becoming partly
cloudy. A chance of showers and thunderstorms late. Highs around
80. Southwest winds 5 to 10 mph. Chance of precipitation
40 percent.
.FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms in the evening. Lows in the mid 60s. Southwest
winds around 5 mph. Chance of precipitation 50 percent.
.SATURDAY...Partly cloudy in the morning, then clearing. Highs in
the upper 70s. Northwest winds 5 to 10 mph.
.SATURDAY NIGHT...Clear. Lows in the upper 50s. Northwest winds
around 5 mph.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Partly cloudy in the evening, then becoming
mostly clear. Lows in the mid 50s.
.MONDAY...Partly cloudy. Highs in the mid 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the upper 50s.
.TUESDAY...Partly cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. Lows in the mid 60s.
.WEDNESDAY...Mostly cloudy in the morning, then becoming partly
cloudy. Highs in the lower 80s.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.THURSDAY...Partly cloudy. Highs around 80.

$$

ILZ032-211600-
Livingston-
Including the cities of Pontiac, Dwight, and Fairbury
841 PM CDT Thu Aug 20 2026

.TONIGHT...Clear. Lows in the upper 50s. Northeast winds around
5 mph in the evening, becoming light and variable.
.FRIDAY...Partly cloudy. A slight chance of showers and
thunderstorms late. Highs in the lower 80s. Southwest winds
around 5 mph. Chance of precipitation 20 percent.
.FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms in the evening. Lows in the mid 60s. Southwest
winds around 5 mph. Chance of precipitation 50 percent.
.SATURDAY...Partly cloudy in the morning, then clearing. Highs in
the upper 70s. Northwest winds 5 to 10 mph.
.SATURDAY NIGHT...Clear. Lows in the upper 50s. Northwest winds
around 5 mph.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.MONDAY...Partly cloudy. Highs in the mid 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the upper 50s.
.TUESDAY...Partly cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. Lows in the mid 60s.
.WEDNESDAY...Mostly cloudy in the morning, then becoming partly
cloudy. Highs in the lower 80s.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.THURSDAY...Mostly sunny in the morning, then becoming partly
cloudy. Highs around 80.

$$

ILZ023-211600-
Kankakee-
Including the cities of Kankakee, Bourbonnais, and Bradley
841 PM CDT Thu Aug 20 2026

.TONIGHT...Mostly clear. Lows in the upper 50s. Northeast winds
around 5 mph in the evening, becoming light and variable.
.FRIDAY...Mostly cloudy in the morning, then becoming partly
cloudy. Highs in the upper 70s. Southwest winds around 5 mph.
.FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms in the evening. A slight chance of showers after
midnight. Lows in the lower 60s. Southwest winds around 5 mph.
Chance of precipitation 50 percent.
.SATURDAY...Partly cloudy in the morning, then clearing. Highs in
the upper 70s. Northwest winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly clear. Lows in the upper 50s. Northwest
winds around 5 mph.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.MONDAY...Partly cloudy. Highs in the mid 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.TUESDAY...Partly cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. Lows in the lower 60s.
.WEDNESDAY...Mostly cloudy in the morning, then becoming partly
cloudy. Highs around 80.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.THURSDAY...Partly cloudy. Highs in the upper 70s.

$$

ILZ039-211600-
Ford-
Including the cities of Paxton and Gibson City
841 PM CDT Thu Aug 20 2026

.TONIGHT...Clear. Lows in the upper 50s. Northeast winds around
5 mph in the evening, becoming light and variable.
.FRIDAY...Partly cloudy. Highs around 80. Light and variable
winds, becoming southwest around 5 mph in the afternoon.
.FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms in the evening. A slight chance of showers after
midnight. Lows in the lower 60s. Southwest winds around 5 mph.
Chance of precipitation 50 percent.
.SATURDAY...Partly cloudy in the morning, then clearing. Highs in
the upper 70s. Northwest winds 5 to 10 mph, increasing to 10 to
15 mph in the afternoon.
.SATURDAY NIGHT...Clear. Lows in the upper 50s. Northwest winds
5 to 10 mph.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.MONDAY...Mostly sunny in the morning, then becoming partly
cloudy. Highs in the mid 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the upper 50s.
.TUESDAY...Mostly sunny in the morning, then becoming partly
cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. Lows in the lower 60s.
.WEDNESDAY...Mostly cloudy in the morning, then becoming partly
cloudy. Highs in the lower 80s.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.THURSDAY...Partly cloudy. Highs around 80.

$$

ILZ033-211600-
Iroquois-
Including the cities of Watseka and Gilman
841 PM CDT Thu Aug 20 2026

.TONIGHT...Mostly clear. Lows in the upper 50s. Northeast winds
around 5 mph in the evening, becoming light and variable.
.FRIDAY...Partly cloudy. Highs in the upper 70s. Light and
variable winds, becoming southwest around 5 mph in the afternoon.
.FRIDAY NIGHT...Mostly cloudy. A chance of showers and
thunderstorms in the evening. A slight chance of showers after
midnight. Lows in the lower 60s. Southwest winds around 5 mph.
Chance of precipitation 50 percent.
.SATURDAY...Partly cloudy in the morning, then clearing. Highs in
the upper 70s. Northwest winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly clear. Lows in the upper 50s. Northwest
winds around 5 mph.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.MONDAY...Partly cloudy. Highs in the mid 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.TUESDAY...Partly cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. Lows in the lower 60s.
.WEDNESDAY...Mostly cloudy in the morning, then becoming partly
cloudy. Highs around 80.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.THURSDAY...Partly cloudy. Highs around 80.

$$

INZ010-211600-
Newton-
Including the cities of Roselawn, Kentland, and Morocco
841 PM CDT Thu Aug 20 2026

.TONIGHT...Clear in the evening, then becoming partly cloudy.
Lows in the upper 50s. North winds around 5 mph in the evening,
becoming light and variable.
.FRIDAY...Mostly cloudy in the morning, then becoming partly
cloudy. Highs in the upper 70s. Light and variable winds,
becoming southwest around 5 mph in the afternoon.
.FRIDAY NIGHT...Mostly cloudy. A chance of thunderstorms in the
evening. A chance of showers. A slight chance of thunderstorms
after midnight. Lows in the lower 60s. Light and variable winds,
becoming southwest around 5 mph after midnight. Chance of
precipitation 50 percent.
.SATURDAY...Mostly cloudy in the morning, then clearing. Highs in
the upper 70s. Northwest winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly clear. Lows in the upper 50s. Northwest
winds around 5 mph.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Mostly clear in the evening, then becoming partly
cloudy. Lows in the lower 50s.
.MONDAY...Partly cloudy. Highs in the lower 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.TUESDAY...Partly cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. Lows in the lower 60s.
.WEDNESDAY...Mostly cloudy in the morning, then partly cloudy
with a chance of showers and thunderstorms in the afternoon.
Highs in the upper 70s. Chance of precipitation 30 percent.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.THURSDAY...Partly cloudy. Highs in the upper 70s.

$$

INZ011-211600-
Jasper-
Including the cities of Rensselaer and DeMotte
841 PM CDT Thu Aug 20 2026

.TONIGHT...Clear in the evening, then becoming partly cloudy.
Lows in the upper 50s. North winds around 5 mph in the evening,
becoming light and variable.
.FRIDAY...Mostly cloudy in the morning, then becoming partly
cloudy. Highs in the upper 70s. Southwest winds around 5 mph.
.FRIDAY NIGHT...Mostly cloudy. A chance of thunderstorms late in
the evening. A chance of showers in the late evening and early
morning. A slight chance of thunderstorms after midnight. Lows in
the lower 60s. Southwest winds around 5 mph. Chance of
precipitation 40 percent.
.SATURDAY...Mostly cloudy in the morning, then clearing. Highs in
the mid 70s. Northwest winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly clear. Lows in the upper 50s. Northwest
winds around 5 mph.
.SUNDAY...Mostly sunny. Highs in the lower 70s.
.SUNDAY NIGHT...Mostly clear in the evening, then becoming partly
cloudy. Lows in the lower 50s.
.MONDAY...Partly cloudy. Highs in the lower 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.TUESDAY...Partly cloudy. Highs in the mid 70s.
.TUESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. Lows in the lower 60s.
.WEDNESDAY...Mostly cloudy in the morning, then partly cloudy
with a chance of showers and thunderstorms in the afternoon.
Highs in the upper 70s. Chance of precipitation 30 percent.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.THURSDAY...Partly cloudy. Highs in the upper 70s.

$$

INZ019-211600-
Benton-
Including the cities of Fowler and Oxford
941 PM EDT Thu Aug 20 2026

.TONIGHT...Clear in the evening, then becoming partly cloudy.
Lows in the upper 50s. North winds around 5 mph in the evening,
becoming light and variable.
.FRIDAY...Partly cloudy. Highs in the upper 70s. Light and
variable winds, becoming southwest around 5 mph in the afternoon.
.FRIDAY NIGHT...Mostly cloudy. A chance of thunderstorms late in
the evening. A chance of showers in the late evening and early
morning. A slight chance of thunderstorms after midnight. Lows in
the lower 60s. Light and variable winds, becoming southwest
around 5 mph after midnight. Chance of precipitation 40 percent.
.SATURDAY...Mostly cloudy in the morning, then clearing. Highs in
the upper 70s. Northwest winds 5 to 10 mph.
.SATURDAY NIGHT...Mostly clear. Lows in the upper 50s. Northwest
winds around 5 mph.
.SUNDAY...Mostly sunny. Highs in the mid 70s.
.SUNDAY NIGHT...Mostly clear in the evening, then becoming partly
cloudy. Lows in the mid 50s.
.MONDAY...Mostly sunny in the morning, then becoming partly
cloudy. Highs in the lower 70s.
.MONDAY NIGHT...Partly cloudy. Lows in the mid 50s.
.TUESDAY...Partly cloudy. Highs in the upper 70s.
.TUESDAY NIGHT...Partly cloudy in the evening, then becoming
mostly cloudy. Lows in the lower 60s.
.WEDNESDAY...Partly cloudy. A chance of showers and thunderstorms
in the afternoon. Highs in the upper 70s. Chance of precipitation
30 percent.
.WEDNESDAY NIGHT...Partly cloudy. Lows in the lower 60s.
.THURSDAY...Partly cloudy. Highs in the upper 70s.

$$