Frost Advisory
Status
Event Continued ExpiredStart Time
Mon 04/20/2026 03:34 AM EDTEnd Time
Mon 04/20/2026 10:00 AM EDTSignificance
AdvisoryImpacts
Low impact
Locations Affected
Chicago, IL ∙ Cicero, IL ∙ Oak Lawn, IL ∙ Oak Park, IL ∙ Berwyn, IL ∙ River Forest, IL ∙ Indian Head Park, IL ∙ Worth, IL ∙ La Grange, IL ∙ Chicago Midway Airport, ILFull Alert Message
URGENT - WEATHER MESSAGE National Weather Service Chicago IL 234 AM CDT Mon Apr 20 2026 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * WHAT...Temperatures as low as 33 will result in frost formation in the near west suburbs. Temperatures as low as 35 with patchy frost in Chicago. * WHERE...Central Cook County. * WHEN...Until 9 AM CDT this morning. * IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold.
Technical Header
ILZ104-201400- /O.CON.KLOT.FR.Y.0002.000000T0000Z-260420T1400Z/ Central Cook- Including the cities of Cicero, Oak Park, La Grange, Chicago, and Oak Lawn 234 AM CDT Mon Apr 20 2026
