Wisconsin Severe Extreme Heat Warning | Effective 06/29/2026 23:04

Headline: 
Extreme Heat Warning issued June 30 at 1:04AM CDT until June 30 at 7:00PM CDT by NWS Green Bay WI
Event: 
Extreme Heat Warning
Urgency: 
Expected
Effective: 
June 29, 2026 - 11:04pm
Expires: 
June 30, 2026 - 11:00am
Description: 
* WHAT...Dangerously hot conditions with heat index values up to 108. * WHERE...Florence, Menominee, Marinette, and Oconto 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: 
Florence; Northern Marinette County; Menominee; Northern Oconto County; Southern Marinette County; Southern Oconto County
Forcast Office: 
NWS Green Bay WI