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Illinois Severe Weather Outlook
Friday, Oct 9: Illinois has thunderstorms in the outlook but no severe risk, and none through Sunday.
The Storm Prediction Center's outlook for Illinois over the next three days, the SevereWX forecast for each Illinois city we cover, and what a typical severe weather year looks like here.
SPC outlook for Illinois
- Day 1 (Friday, October 9): General thunderstorms
- Day 2 (Saturday, October 10): General thunderstorms
- Day 3 (Sunday, October 11): No severe risk
Illinois city forecasts
- Chicago, IL severe weather forecast: today No Severe Threat, tomorrow No Severe Threat, Day 3 No Severe Threat
- Peoria, IL severe weather forecast: today No Severe Threat, tomorrow No Severe Threat, Day 3 No Severe Threat
- Springfield, IL severe weather forecast: today No Severe Threat, tomorrow No Severe Threat, Day 3 No Severe Threat
Severe weather in Illinois, by the numbers
Illinois averages 63.5 tornadoes a year (1996–2025), about 6.7 of them rated EF2 or stronger.
62% of them touch down between April and June, and May alone accounts for 22%. The busiest year on record in that span was 2024, with 139.
Storm reports average about 290 for large hail a year (19.6 of them 2 inches or larger) and 692 for damaging wind (2016–2025).
Source: NOAA Storm Prediction Center severe weather database. Tornadoes are counted in the state where they began. One storm can produce many reports. spc.noaa.gov