Tabular State Forecast
Issued by NWS
Issued by NWS
590
FPUS63 KILX 181605
SFTIL
ILZ001>013-015>021-023>108-182200-
Tabular State Forecast for Illinois
National Weather Service Lincoln IL
1105 AM CDT Fri Sep 18 2026
ROWS INCLUDE...
Daily predominant daytime weather 6AM-6PM
Forecast temperatures...early morning low/daytime high
Probability of precipitation nighttime 6PM-6AM/daytime 6AM-6PM
- indicates temperatures below zero
MM indicates missing data
FCST FCST FCST FCST FCST FCST FCST
Today Sat Sun Mon Tue Wed Thu
Sep 18 Sep 19 Sep 20 Sep 21 Sep 22 Sep 23 Sep 24
...Northwest IL...
Moline/Rock Island
Shwrs Tstrms Shwrs Shwrs Shwrs Ptcldy Ptcldy
/76 68/83 65/72 57/65 52/64 49/68 52/70
/60 60/70 80/80 60/60 50/50 00/00 00/10
Sterling/Rock Falls
Shwrs Tstrms Shwrs Shwrs Ptcldy Ptcldy Ptcldy
/74 64/81 63/71 55/66 50/65 48/68 50/70
/50 80/70 80/80 60/50 40/30 10/00 00/00
...North central IL...
DeKalb
Mocldy Tstrms Shwrs Shwrs Mocldy Ptcldy Ptcldy
/72 61/78 63/69 55/64 50/63 49/66 50/69
/20 50/90 80/80 60/50 30/30 10/10 00/00
Rockford
Mocldy Tstrms Shwrs Mocldy Mocldy Ptcldy Ptcldy
/72 61/77 61/68 55/64 50/63 48/66 50/69
/30 70/90 80/70 50/40 40/30 10/10 00/00
...Northeast IL...
Aurora
Mocldy Tstrms Shwrs Shwrs Mocldy Ptcldy Ptcldy
/72 62/78 64/70 56/65 52/63 51/66 52/69
/20 50/80 80/80 70/50 30/20 10/10 00/00
Chicago Downtown
Ptcldy Tstrms Shwrs Shwrs Mocldy Mocldy Ptcldy
/70 61/76 64/69 57/66 55/64 55/65 56/67
/20 50/90 80/80 60/50 30/20 20/10 00/10
Chicago O`Hare
Ptcldy Tstrms Shwrs Shwrs Mocldy Mocldy Ptcldy
/71 62/77 63/69 56/64 54/63 54/65 54/68
/20 50/90 80/80 60/50 30/30 30/10 00/10
Joliet
Mocldy Tstrms Shwrs Shwrs Ptcldy Ptcldy Ptcldy
/75 64/80 66/73 58/66 54/65 54/68 54/71
/20 40/80 80/80 70/60 30/30 10/10 00/10
Kankakee
Mocldy Tstrms Shwrs Shwrs Ptcldy Ptcldy Ptcldy
/77 63/82 65/76 56/67 52/66 52/69 52/71
/20 30/70 70/70 70/60 40/30 30/10 10/10
Waukegan
Ptcldy Tstrms Shwrs Mocldy Mocldy Mocldy Ptcldy
/69 59/74 60/68 54/65 52/64 52/65 52/67
/20 80/100 80/70 40/40 30/20 20/10 00/10
...West central IL...
Jerseyville
Sunny Ptcldy Ptcldy Tstrms Mocldy Ptcldy Ptcldy
/92 71/96 70/90 63/76 57/70 51/73 53/75
/30 20/10 10/40 70/70 60/20 10/00 00/00
Macomb
Ptcldy Mocldy Tstrms Shwrs Mocldy Ptcldy Ptcldy
/82 69/88 67/77 59/66 54/64 49/68 52/70
/20 20/20 70/70 70/70 50/30 10/00 00/00
Quincy
Ptcldy Ptcldy Shwrs Shwrs Mocldy Ptcldy Ptcldy
/87 73/93 70/81 63/69 57/66 52/69 55/71
/20 10/10 40/70 70/70 50/20 10/00 00/10
...Central IL...
Decatur
Ptcldy Ptcldy Shwrs Tstrms Ptcldy Ptcldy Ptcldy
/86 68/92 69/86 60/72 54/68 52/71 53/73
/10 10/20 30/50 70/70 60/40 10/00 00/00
LaSalle/Peru
Mocldy Tstrms Shwrs Shwrs Ptcldy Ptcldy Ptcldy
/76 66/83 66/73 58/66 53/65 51/68 52/71
/30 30/60 80/80 70/60 40/30 10/10 10/00
Peoria
Ptcldy Mocldy Tstrms Shwrs Ptcldy Ptcldy Ptcldy
/80 69/87 68/77 60/68 55/66 53/69 54/72
/20 20/30 60/70 70/70 40/30 10/00 00/00
Pontiac
Mocldy Tstrms Shwrs Shwrs Mocldy Ptcldy Ptcldy
/78 65/85 67/76 57/67 52/66 51/69 52/72
/20 20/50 70/70 70/70 40/30 10/10 10/00
Springfield
Ptcldy Ptcldy Shwrs Tstrms Mocldy Ptcldy Ptcldy
/88 71/94 70/86 62/72 56/69 53/72 54/74
/30 10/10 40/50 70/70 50/30 00/00 00/00
...East central IL...
Champaign/Urbana
Mocldy Ptcldy Shwrs Tstrms Mocldy Ptcldy Ptcldy
/82 66/89 68/83 60/70 54/68 52/70 53/72
/10 10/40 40/50 60/70 50/30 10/00 00/00
Charleston/Mattoon
Ptcldy Ptcldy Ptcldy Tstrms Ptcldy Ptcldy Ptcldy
/88 68/93 71/89 62/74 55/70 53/72 53/74
/20 20/20 20/30 60/60 60/40 10/00 00/00
...Southwest IL...
Belleville
Sunny Ptcldy Ptcldy Tstrms Mocldy Ptcldy Ptcldy
/96 73/98 74/95 68/82 62/74 56/76 56/77
/30 20/10 00/20 50/70 70/30 10/00 00/00
Chester
Sunny Sunny Sunny Tstrms Ptcldy Ptcldy Sunny
/96 70/97 71/95 67/85 60/75 55/76 54/78
/30 20/10 00/10 40/50 50/10 10/00 00/00
...South central IL...
Carbondale
Sunny Sunny Sunny Tstrms Ptcldy Ptcldy Ptcldy
/99 72/98 73/97 70/88 63/77 57/77 57/77
/20 20/00 00/10 20/50 50/10 10/00 00/00
Centralia
Sunny Sunny Ptcldy Tstrms Ptcldy Ptcldy Ptcldy
/95 71/97 72/95 67/83 60/75 55/76 55/77
/30 20/10 00/20 40/60 60/30 10/00 00/00
Mount Vernon
Sunny Sunny Sunny Tstrms Ptcldy Ptcldy Ptcldy
/98 71/98 72/97 67/86 60/77 55/77 55/78
/20 20/10 00/20 30/50 50/30 10/00 00/00
...Southeast IL...
Lawrenceville
Sunny Sunny Ptcldy Shwrs Ptcldy Ptcldy Ptcldy
/93 70/96 72/95 67/83 60/76 57/76 56/77
/10 20/10 20/20 40/50 50/40 10/10 00/00
$$