Illinois Freeze Warning | Effective 04/18/2026 23:52

Headline: 
Freeze Warning issued April 19 at 1:52AM CDT until April 20 at 9:00AM CDT by NWS Chicago IL
Event: 
Freeze Warning
Urgency: 
Expected
Effective: 
April 18, 2026 - 11:52pm
Expires: 
April 19, 2026 - 10:00am
Description: 
* WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Northern Cook and Southern Cook Counties. * WHEN...From midnight tonight to 9 AM CDT Monday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.
Instruction: 
Take steps now to protect tender plants from the cold.
Area Description: 
Northern Cook; Southern Cook
Forcast Office: 
NWS Chicago IL