Wisconsin Severe Extreme Heat Warning | Effective 06/28/2026 10:35

Headline: 
Extreme Heat Warning issued June 28 at 12:35PM CDT until June 30 at 7:00PM CDT by NWS Green Bay WI
Event: 
Extreme Heat Warning
Urgency: 
Expected
Effective: 
June 28, 2026 - 10:35am
Expires: 
June 28, 2026 - 6:45pm
Description: 
* WHAT...Dangerously hot conditions with heat index values up to 107 expected inland, away from Lake Michigan. Overnight heat indices will remain around 75 degrees, which will still be hazardous for anyone without shelter after the extreme heat in the afternoon. * WHERE...Manitowoc, Door, and Kewaunee Counties. Primarily in western Manitowoc and Kewaunee counties and southern Door County. * WHEN...From noon Monday to 7 PM CDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.
Instruction: 
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors.
Area Description: 
Door; Kewaunee; Manitowoc
Forcast Office: 
NWS Green Bay WI