FPUS63 KILX 180905 SFTIL ILZ001>013-015>021-023>108-182200- Tabular State Forecast for Illinois National Weather Service Lincoln IL 405 AM CDT Mon May 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 Tue Wed Thu Fri Sat Sun May 18 May 19 May 20 May 21 May 22 May 23 May 24 ...Northwest IL... Moline/Rock Island Tstrms Shwrs Ptcldy Ptcldy Mocldy Ptcldy Ptcldy /81 67/76 49/67 45/69 49/73 53/80 57/85 /80 80/50 00/00 00/00 40/40 20/10 10/10 Sterling/Rock Falls Tstrms Shwrs Ptcldy Ptcldy Mocldy Ptcldy Ptcldy /81 67/77 47/66 43/67 47/71 51/78 54/83 /70 70/50 10/00 00/00 30/40 20/10 10/10 ...North central IL... DeKalb Tstrms Tstrms Ptcldy Ptcldy Mocldy Ptcldy Ptcldy /81 65/77 47/63 41/64 46/69 50/76 53/81 /70 60/60 10/00 00/00 20/20 20/10 10/10 Rockford Tstrms Tstrms Ptcldy Ptcldy Mocldy Ptcldy Ptcldy /82 65/77 46/64 41/65 46/69 49/77 53/82 /70 70/70 00/00 00/00 20/20 20/10 10/10 ...Northeast IL... Aurora Tstrms Tstrms Ptcldy Sunny Mocldy Ptcldy Ptcldy /81 66/79 49/64 43/65 48/71 52/77 54/82 /70 50/60 30/00 00/00 10/20 20/20 10/10 Chicago Downtown Tstrms Tstrms Ptcldy Sunny Mocldy Ptcldy Ptcldy /81 68/80 51/55 47/60 51/64 54/66 57/69 /70 40/60 60/00 00/00 20/30 30/20 20/10 Chicago O'Hare Tstrms Tstrms Ptcldy Ptcldy Mocldy Ptcldy Ptcldy /82 68/80 50/60 45/62 49/69 53/75 56/80 /70 50/50 40/00 00/00 10/20 20/20 10/10 Joliet Tstrms Tstrms Ptcldy Sunny Mocldy Ptcldy Ptcldy /81 67/80 51/64 44/66 48/71 53/77 55/82 /70 50/70 60/00 00/00 10/30 30/30 10/10 Kankakee Tstrms Tstrms Ptcldy Sunny Mocldy Ptcldy Ptcldy /81 66/82 51/64 43/68 47/72 53/78 55/82 /70 40/70 70/10 00/00 10/40 30/30 20/20 Waukegan Tstrms Tstrms Ptcldy Ptcldy Mocldy Ptcldy Ptcldy /81 66/78 47/55 43/57 46/63 50/66 53/68 /70 60/60 20/00 00/00 20/20 20/10 10/10 ...West central IL... Jerseyville Tstrms Tstrms Ptcldy Ptcldy Mocldy Ptcldy Ptcldy /82 67/82 53/67 48/71 54/74 57/80 59/85 /90 50/90 90/20 00/10 20/40 40/30 10/10 Macomb Tstrms Tstrms Ptcldy Ptcldy Mocldy Ptcldy Ptcldy /80 68/77 50/67 46/70 52/73 54/80 58/85 /80 80/60 30/00 00/00 30/40 30/30 10/10 Quincy Tstrms Tstrms Ptcldy Ptcldy Mocldy Ptcldy Ptcldy /83 68/77 52/67 49/70 55/74 57/81 60/86 /80 60/50 30/00 00/10 40/40 30/20 10/20 ...Central IL... Decatur Tstrms Tstrms Ptcldy Ptcldy Mocldy Ptcldy Ptcldy /79 69/80 54/67 45/70 53/73 57/79 59/83 /90 40/80 80/20 10/10 20/40 30/30 20/10 LaSalle/Peru Tstrms Tstrms Ptcldy Sunny Mocldy Ptcldy Ptcldy /81 68/79 51/66 44/68 49/72 54/79 56/83 /70 60/60 40/00 00/00 20/30 30/30 10/10 Peoria Tstrms Tstrms Ptcldy Sunny Mocldy Ptcldy Ptcldy /81 68/78 52/68 46/71 52/74 56/81 58/85 /90 70/70 50/00 00/00 20/40 40/30 20/20 Pontiac Tstrms Tstrms Ptcldy Sunny Mocldy Ptcldy Ptcldy /81 67/82 51/67 43/70 49/74 54/80 56/84 /70 50/70 70/00 00/00 20/40 30/30 20/10 Springfield Tstrms Tstrms Ptcldy Sunny Mocldy Ptcldy Ptcldy /81 69/81 54/68 46/72 53/74 57/81 60/86 /90 40/70 70/10 10/10 20/40 30/30 10/20 ...East central IL... Champaign/Urbana Tstrms Tstrms Ptcldy Ptcldy Mocldy Ptcldy Ptcldy /80 68/82 54/67 45/70 51/73 57/79 59/83 /90 40/80 80/20 00/00 10/40 40/30 30/10 Charleston/Mattoon Tstrms Tstrms Ptcldy Ptcldy Shwrs Ptcldy Ptcldy /81 69/81 57/67 47/70 53/72 59/78 61/82 /100 50/80 80/40 10/10 10/50 40/30 20/10 ...Southwest IL... Belleville Tstrms Tstrms Mocldy Ptcldy Tstrms Ptcldy Ptcldy /86 71/86 58/70 52/74 58/76 61/82 63/86 /90 40/100 100/70 10/10 30/50 50/40 20/10 Chester Tstrms Tstrms Shwrs Ptcldy Tstrms Ptcldy Ptcldy /86 69/86 58/70 52/74 57/76 60/81 60/85 /60 50/80 90/80 30/10 40/60 60/40 30/20 ...South central IL... Carbondale Tstrms Tstrms Shwrs Ptcldy Shwrs Tstrms Ptcldy /87 71/87 61/73 55/75 59/77 62/82 63/85 /70 30/70 90/90 20/10 50/70 60/50 40/20 Centralia Tstrms Tstrms Shwrs Ptcldy Tstrms Ptcldy Ptcldy /85 70/86 60/70 52/73 57/75 61/81 63/85 /70 50/80 80/60 10/10 30/60 50/40 40/10 Mount Vernon Tstrms Tstrms Shwrs Ptcldy Shwrs Tstrms Ptcldy /86 70/86 61/72 53/74 58/76 61/81 63/85 /70 50/80 80/60 20/10 40/60 50/50 40/20 ...Southeast IL... Lawrenceville Tstrms Tstrms Shwrs Ptcldy Shwrs Tstrms Ptcldy /85 70/85 63/72 53/73 58/76 63/81 64/85 /80 50/80 90/70 10/10 20/60 60/50 40/20 $$