Alert archive / Illinois / Cold Weather Advisories

Cold Weather Advisories in Illinois, 2026

18 cold weather advisories 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 cold weather advisories reaches back to 2005.

Cold Weather Advisories by county

Each county as a circle sized by its count in 2026. Tap one for its archive.

Cold Weather Advisories: 18
Busiest month: January18 cold weather advisories
Busiest day: January 22, 20265 cold weather advisories

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 17, 1:51 PM CST	Cold Weather Advisory	DVN	Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more	46 hr
Jan 18, 1:59 AM CST	Cold Weather Advisory	LSX	Adams, Bond, Brown, Calhoun, Clinton, Fayette and 7 more	32 hr
Jan 18, 2:07 AM CST	Cold Weather Advisory	ILX	Cass, Champaign, Christian, Clark, Clay, Coles and 29 more	34 hr
Jan 18, 2:13 AM CST	Cold Weather Advisory	LOT	Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more	34 hr
Jan 22, 2:19 AM CST	Cold Weather Advisory	ILX	Cass, Champaign, Christian, Clark, Clay, Coles and 29 more	58 hr
Jan 22, 2:29 AM CST	Cold Weather Advisory	LSX	Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more	58 hr
Jan 22, 3:12 AM CST	Cold Weather Advisory	LOT	Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more	55 hr
Jan 22, 10:02 AM CST	Cold Weather Advisory	DVN	Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more	50 hr
Jan 22, 12:00 PM CST	Cold Weather Advisory	PAH	Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more	4 days
Jan 24, 1:38 PM CST	Cold Weather Advisory	LSX	Adams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more	46 hr
Jan 24, 1:47 PM CST	Cold Weather Advisory	ILX	Cass, Champaign, Christian, Clark, Clay, Coles and 29 more	46 hr
Jan 25, 1:48 AM CST	Cold Weather Advisory	DVN	Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more	34 hr
Jan 25, 2:35 AM CST	Cold Weather Advisory	LOT	Boone, Cook, DeKalb, DuPage, Ford, Grundy and 12 more	32 hr
Jan 26, 1:41 AM CST	Cold Weather Advisory	ILX	Champaign, Christian, Clark, Clay, Coles, Crawford and 16 more	27 hr
Jan 26, 1:49 AM CST	Cold Weather Advisory	LSX	Bond, Clinton, Fayette, Macoupin, Madison, Marion and 5 more	25 hr
Jan 27, 2:12 AM CST	Cold Weather Advisory	ILX	Champaign, Christian, Clark, Clay, Coles, Crawford and 17 more	32 hr
Jan 27, 2:27 PM CST	Cold Weather Advisory	LSX	Bond, Clinton, Fayette, Macoupin, Marion, Montgomery	19 hr
Jan 29, 12:58 PM CST	Cold Weather Advisory	PAH	Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 13 more	47 hr

By county

Every county with at least one alert. A county page lists each alert that covered it.

62 more counties

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record The radar archive 2025

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.