textproduct: Central Illinois
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
KEY MESSAGES
- Record heat along with dry weather will prevail today and Tuesday with afternoon temperatures reaching the upper 80s to lower 90s.
- An active stretch of weather is expected Tuesday night through Thursday night with daily chances for showers and storms. There is a Marginal Risk for severe thunderstorms near the lower Illinois River Valley Tuesday night.
- Cooler air will arrive Friday into the weekend with highs dropping to the upper 50s and 60s and potential for frost Friday and Saturday nights as temperatures fall into the 30s.
..Much cooler for the weekend
Cold air trailing the Canadian Trough will arrive Friday, and bring below normal temperatures through at least Sunday morning, although a strong rebound in temperatures looks to initiate on Sunday. Highs look to range from lower 70s to lower 80s Wednesday and Thursday with the front stalled near the area, cloud cover, and periods of precipitation. Friday into Saturday, model blend brings highs down to upper 50s and lower 60s. Lows Friday night and Saturday night are in the 30s bringing potential for frost as high pressure moves across the area bringing clear skies and light winds. Over the past day model ensembles have come into much better agreement with the overall pattern this weekend, however it should be noted that spread from 10th to 90th percentile temperatures is around 10 to 15 degrees through this period, so temperatures could easily vary 5 to 8 degrees from model blend forecast.
AVIATION /06Z TAFS THROUGH 06Z TUESDAY/
Issued at 1204 AM CDT Mon Oct 12 2026
VFR conditions to prevail through the period, with any ceilings being high-based and early in the period. Winds trend more toward the southwest early Monday morning and should increase to around 10 knots or so by mid morning. Late in the period, a low level jet will strengthen from western Missouri into northern Illinois, with any LLWS before 06z most likely at KPIA/KBMI.
CLIMATE
Issued at 612 AM CDT Sun Oct 11 2026
Record high temperatures for Monday and Tuesday:
Location Monday Tuesday ======== ======= ======= Bloomington 88/1930 91/1899 Champaign 87/1962 86/1989 Charleston 89/1962 87/2017 Decatur 92/1962 90/1899 Jacksonville 88/1901 91/1899 Olney 89/1928 93/1928 Peoria 87/2024 88/1899 Springfield 89/1962 88/1975
ILX WATCHES/WARNINGS/ADVISORIES
None.
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