Tabular State Forecast
Issued by NWS
Issued by NWS
489
FPUS63 KILX 172106
SFTIL
ILZ001>013-015>021-023>108-181000-
Tabular State Forecast for Illinois
National Weather Service Lincoln IL
405 PM CDT Mon Aug 17 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
Tue Wed Thu Fri Sat Sun Mon
Aug 18 Aug 19 Aug 20 Aug 21 Aug 22 Aug 23 Aug 24
...Northwest IL...
Moline/Rock Island
Tstrms Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy
63/79 65/79 61/79 62/80 64/79 61/76 60/77
00/50 50/00 00/00 20/20 40/30 20/00 20/20
Sterling/Rock Falls
Tstrms Ptcldy Sunny Ptcldy Ptcldy Ptcldy Ptcldy
60/78 63/78 57/79 59/79 62/78 58/74 57/76
00/50 50/00 00/00 20/20 40/30 20/00 10/10
...North central IL...
DeKalb
Ptcldy Ptcldy Sunny Ptcldy Ptcldy Ptcldy Ptcldy
60/79 63/78 59/78 58/78 61/76 57/74 56/75
00/40 60/30 00/00 20/30 40/40 20/10 10/10
Rockford
Tstrms Ptcldy Sunny Ptcldy Ptcldy Ptcldy Ptcldy
60/79 62/78 58/79 59/79 61/76 57/75 56/76
00/50 50/20 00/00 20/30 40/40 20/10 10/10
...Northeast IL...
Aurora
Ptcldy Ptcldy Sunny Ptcldy Ptcldy Sunny Ptcldy
60/79 65/78 61/78 59/78 62/76 59/74 57/75
10/30 60/40 10/00 10/20 30/30 30/10 10/10
Chicago Downtown
Ptcldy Ptcldy Sunny Sunny Ptcldy Sunny Ptcldy
65/81 68/77 66/78 65/80 66/77 64/74 63/75
10/20 60/40 00/00 00/20 30/30 30/10 10/10
Chicago O`Hare
Ptcldy Ptcldy Sunny Ptcldy Ptcldy Ptcldy Ptcldy
64/81 66/79 64/79 63/81 65/78 62/75 60/77
10/30 60/30 00/00 10/20 30/30 30/10 10/10
Joliet
Ptcldy Ptcldy Sunny Sunny Ptcldy Sunny Ptcldy
62/80 66/79 62/79 60/79 63/78 61/75 59/75
10/20 60/50 10/00 10/20 30/30 30/10 10/10
Kankakee
Ptcldy Shwrs Sunny Sunny Ptcldy Sunny Ptcldy
60/80 66/78 60/78 58/79 62/78 59/75 57/75
10/20 60/60 20/00 00/20 30/30 30/00 00/10
Waukegan
Tstrms Ptcldy Sunny Ptcldy Ptcldy Ptcldy Ptcldy
62/80 64/76 62/77 61/79 62/76 59/73 58/74
00/50 60/20 00/00 10/30 30/30 30/10 10/10
...West central IL...
Jerseyville
Sunny Tstrms Ptcldy Sunny Sunny Sunny Ptcldy
61/85 67/82 64/82 61/84 64/83 61/81 61/82
00/00 50/50 40/40 10/00 20/20 20/10 10/10
Macomb
Ptcldy Ptcldy Sunny Sunny Sunny Ptcldy Ptcldy
61/80 65/78 61/78 60/80 63/78 60/77 59/77
00/30 50/20 20/10 10/20 30/30 10/10 10/10
Quincy
Ptcldy Ptcldy Sunny Sunny Sunny Sunny Ptcldy
65/83 68/80 65/81 64/82 66/81 63/80 64/81
00/20 60/20 20/20 00/00 30/30 00/10 20/20
...Central IL...
Decatur
Ptcldy Tstrms Ptcldy Sunny Ptcldy Sunny Ptcldy
60/82 66/80 62/80 60/81 62/80 60/78 59/78
00/00 50/50 50/10 10/20 20/20 20/00 10/10
LaSalle/Peru
Ptcldy Ptcldy Sunny Sunny Ptcldy Sunny Ptcldy
62/79 66/78 61/78 61/79 64/78 60/74 59/75
00/30 60/50 10/00 20/20 40/30 20/00 10/10
Peoria
Ptcldy Ptcldy Sunny Sunny Ptcldy Sunny Ptcldy
63/81 67/80 63/79 62/81 65/80 62/77 61/77
00/10 40/20 10/00 00/20 30/30 20/00 10/10
Pontiac
Ptcldy Shwrs Sunny Sunny Ptcldy Ptcldy Ptcldy
60/80 67/79 61/78 59/79 63/78 59/75 58/76
00/20 60/60 20/00 00/20 30/30 30/00 10/10
Springfield
Ptcldy Mocldy Ptcldy Sunny Ptcldy Sunny Ptcldy
62/84 67/81 64/81 61/83 64/81 62/80 60/80
00/00 60/40 40/20 10/10 30/20 20/10 10/10
...East central IL...
Champaign/Urbana
Ptcldy Mocldy Sunny Sunny Ptcldy Sunny Ptcldy
60/81 66/79 61/79 59/80 62/79 60/77 58/77
00/00 40/40 40/10 00/20 20/30 30/00 10/10
Charleston/Mattoon
Ptcldy Tstrms Ptcldy Sunny Sunny Sunny Ptcldy
60/82 66/81 63/80 60/82 62/81 60/78 58/79
00/00 40/70 70/40 10/00 20/20 20/00 10/10
...Southwest IL...
Belleville
Sunny Tstrms Shwrs Sunny Sunny Sunny Ptcldy
65/88 70/85 68/83 65/85 67/86 65/84 64/85
00/00 50/60 70/70 10/00 10/20 20/10 10/10
Chester
Sunny Tstrms Tstrms Sunny Sunny Sunny Ptcldy
63/87 68/85 66/82 64/83 65/84 63/82 62/84
00/00 40/60 80/80 20/10 10/20 20/10 10/10
...South central IL...
Carbondale
Sunny Tstrms Tstrms Sunny Sunny Sunny Ptcldy
64/88 68/87 68/84 65/85 65/86 64/83 63/84
00/00 50/60 80/80 50/10 20/10 10/00 10/10
Centralia
Sunny Tstrms Tstrms Sunny Sunny Sunny Ptcldy
62/85 68/84 66/82 63/84 64/85 63/81 61/82
00/00 50/70 70/70 20/00 20/20 20/00 10/10
Mount Vernon
Sunny Shwrs Tstrms Sunny Sunny Sunny Ptcldy
62/86 67/85 66/83 63/85 64/86 63/83 61/84
00/00 50/70 70/70 40/10 20/10 10/00 10/10
...Southeast IL...
Lawrenceville
Sunny Tstrms Shwrs Sunny Sunny Sunny Ptcldy
62/84 67/83 66/83 63/84 64/85 62/82 60/82
00/00 40/70 60/60 10/10 10/20 20/00 10/10
$$