Iowa, Nebraska Severe Extreme Heat Warning | Effective 06/27/2026 09:58

Headline: 
Extreme Heat Warning issued June 27 at 11:58AM CDT until June 30 at 9:00PM CDT by NWS Omaha/Valley NE
Event: 
Extreme Heat Warning
Urgency: 
Expected
Effective: 
June 27, 2026 - 9:58am
Expires: 
June 28, 2026 - 1:00am
Description: 
* WHAT...Dangerously hot conditions with heat index values up to 110 expected southwest Iowa and the Omaha metro. Overnight minimum heat index values remain in the upper-70s and low-80s. * WHERE...In Iowa, Fremont, Mills, Montgomery, Page, and Pottawattamie Counties. In Nebraska, Douglas and Sarpy Counties. * WHEN...From 1 PM Sunday to 9 PM CDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Overnight heat indices in the upper-70s and low-80s will prevent uncooled homes from easily dispersing the day's heat. Hot temperatures are expected to linger through the week. The extreme heat warning may be extended or replaced with a heat advisory into the work week.
Instruction: 
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes.
Area Description: 
Pottawattamie; Mills; Montgomery; Fremont; Page; Douglas; Sarpy
Forcast Office: 
NWS Omaha/Valley NE