Alert archive / Illinois / Extreme Cold Warnings
Extreme Cold Warnings in Illinois, 2025
5 extreme cold warnings in 2025. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of extreme cold warnings reaches back to 2005.
Extreme Cold Warnings by county
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Extreme Cold Warnings
- 5
- Busiest month
- January4 extreme cold warnings
- Busiest day
- January 21, 20253 extreme cold warnings
Over time
By month
The alerts
Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 20, 2:42 AM CST | Extreme Cold Warning | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 33 hr |
| Jan 21, 1:24 AM CST | Extreme Cold Warning | LSX | Adams, Brown | 11 hr |
| Jan 21, 2:03 AM CST | Extreme Cold Warning | LOT | Boone, DeKalb, Kane, Lake, LaSalle, Lee and 3 more | 10 hr |
| Jan 21, 2:08 AM CST | Extreme Cold Warning | ILX | Fulton, Knox, McLean, Marshall, Peoria, Schuyler and 3 more | 13 hr |
| Dec 13, 6:13 PM CST | Extreme Cold Warning | ILX | Champaign, Christian, Coles, DeWitt, Douglas, Edgar and 6 more | 18 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- McLean County2
- Bureau County1
- Carroll County1
- Hancock County1
- Henderson County1
- Henry County1
- Jo Daviess County1
- McDonough County1
- Mercer County1
- Putnam County1
- Rock Island County1
- Stephenson County1
- Warren County1
- Whiteside County1
- Adams County1
- Brown County1
- Boone County1
- DeKalb County1
- Kane County1
- Lake County1
- LaSalle County1
- Lee County1
- McHenry County1
- Ogle County1
- Winnebago County1
- Fulton County1
- Knox County1
- Marshall County1
- Peoria County1
- Schuyler County1
- Stark County1
- Tazewell County1
- Woodford County1
- Champaign County1
- Christian County1
- Coles County1
- DeWitt County1
- Douglas County1
- Edgar County1
- Macon County1
4 more counties
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordThe radar archive20242026
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Rebuilt daily.