Alert archive / Illinois / Extreme Cold Watches
Extreme Cold Watches in Illinois, 2026
3 extreme cold watches in 2026. 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 watches reaches back to 2005.
Extreme Cold Watches by county
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Extreme Cold Watches
- 3
- Busiest month
- January3 extreme cold watches
- Busiest day
- January 21, 20263 extreme cold watches
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 21, 2:44 AM CST | Extreme Cold Watch | ILX | Fulton, Knox, McLean, Marshall, Peoria, Stark and 2 more | 24 hr |
| Jan 21, 2:46 AM CST | Extreme Cold Watch | DVN | Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more | 31 hr |
| Jan 21, 3:01 AM CST | Extreme Cold Watch | LOT | Boone, Cook, DeKalb, DuPage, Grundy, Kane and 10 more | 24 hr |
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Fulton County1
- Knox County1
- McLean County1
- Marshall County1
- Peoria County1
- Stark County1
- Tazewell County1
- Woodford County1
- 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
- Boone County1
- Cook County1
- DeKalb County1
- DuPage County1
- Grundy County1
- Kane County1
- Kankakee County1
- Kendall County1
- Lake County1
- LaSalle County1
- Lee County1
- Livingston County1
- McHenry County1
- Ogle County1
- Will County1
- Winnebago County1
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
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. Warning verification from the Mesonet's Cow. Rebuilt daily.