Wisconsin Severe Extreme Heat Warning | Effective 06/30/2026 12:14

Headline: 
Extreme Heat Warning issued June 30 at 2:14PM CDT until June 30 at 7:00PM CDT by NWS Green Bay WI
Event: 
Extreme Heat Warning
Urgency: 
Expected
Effective: 
June 30, 2026 - 12:14pm
Expires: 
June 30, 2026 - 5:00pm
Description: 
* WHAT...Dangerously hot conditions with heat index values up to 105. Heat index values over central WI will reach 95 to around 100. * WHERE...Marathon, Portage, Waushara, Wood, Calumet, Winnebago, Brown, Outagamie, Shawano, and Waupaca Counties. * WHEN...Until 7 PM CDT this evening. * 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: 
Marathon; Shawano; Wood; Portage; Waupaca; Outagamie; Brown; Waushara; Winnebago; Calumet
Forcast Office: 
NWS Green Bay WI