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.  
 
 
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