Winter Storm Warning Diamond, Illinois

Winter alerts in Diamond, newest first, in effect or ended
Alert	State	Severity	Places
Extreme Cold WatchEnded Wind chills as low as 30 below zero. Issued January 21 Ended January 22, 2026	Illinois	Severe	465 places Diamond Chicago Aurora Joliet Naperville Rockford Elgin Waukegan Cicero Schaumburg and 455 more