Iowa Severe Extreme Heat Warning | Effective 06/28/2026 20:21

Headline: 
Extreme Heat Warning issued June 28 at 10:21PM CDT until June 30 at 9:00PM CDT by NWS Des Moines IA
Event: 
Extreme Heat Warning
Urgency: 
Expected
Effective: 
June 28, 2026 - 8:21pm
Expires: 
June 29, 2026 - 6:30am
Description: 
* WHAT...Dangerously hot conditions with heat index values up to 110 expected. * WHERE...Grundy, Butler, Cerro Gordo, Franklin, Hancock, Winnebago, Worth, Black Hawk, and Bremer Counties. * WHEN...From noon Monday to 9 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. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
Area Description: 
Winnebago; Worth; Hancock; Cerro Gordo; Franklin; Butler; Bremer; Grundy; Black Hawk
Forcast Office: 
NWS Des Moines IA