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Iowa weather: Extreme heat expected this weekend

Iowa weather: Extreme heat expected this weekend
We are 2 weeks BEAU BOWMAN, vlog 8 NEWS, INL.
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Updated: 9:33 PM CDT Aug 15, 2025
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Iowa weather: Extreme heat expected this weekend
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Updated: 9:33 PM CDT Aug 15, 2025
Editorial Standards
A heat advisory for the following counties will be in effect noon to 8 p.m. Saturday: Audubon, Boone, Calhoun, Carroll, Crawford, Dallas, Greene, Grundy, Guthrie, Hamilton, Hardin, Humboldt, Jasper, Madison, Mahaska, Marion, Marshall, Palo Alto, Pocahontas, Polk, Poweshiek, Sac, Story, Tama, Wapello, Warren, Webster and Wright. Full weekend forecast includes extreme heatQuiet conditions are expected for the rest of the evening once the storms move out, with hot and humid weather remain in place for the metro. Temperatures will be near 90 through sunset, falling back into the lower 80s by 10 p.m. Overnight lows will only dip into the mid-70s through Saturday morning.Closings | Interactive Radar | Weather Alerts Saturday and Sunday are Weather Impact days as very hot and humid conditions will result in afternoon heat index values around 105 degrees both afternoons. Plan for the hot weather if you will be outside by having plenty of water on hand and have ways to cool down. Either take breaks in the shade or in the A/C when possible. The overnight hours will not cool much, with lows in the mid to upper 70s both nights.Storm chances increase on Monday as our next system begins to push into the area. The best rain chances look to be Monday night into Tuesday. This system should bring some relief from the heat, dropping our highs back into the 80s for most of next week with lows in the 60s.Iowa weather forecast:Today: Partly cloudy. Afternoon storm chances in northern Iowa. High 91F. Heat index values around 100. Winds S at 10 to 20 mph.Tonight: A few clouds. Low near 74F. Winds SSE at 10 to 15 mph. Tomorrow: Mostly sunny skies. High 95F. Heat index values around 105. Winds S at 10 to 15 mph.Tomorrow night: A mostly clear sky. Low 75F. Winds S at 10 to 15 mph.

A heat advisory for the following counties will be in effect noon to 8 p.m. Saturday: Audubon, Boone, Calhoun, Carroll, Crawford, Dallas, Greene, Grundy, Guthrie, Hamilton, Hardin, Humboldt, Jasper, Madison, Mahaska, Marion, Marshall, Palo Alto, Pocahontas, Polk, Poweshiek, Sac, Story, Tama, Wapello, Warren, Webster and Wright.

heat advisory through saturday evening
Hearst Owned
Heat Advisory through Saturday evening

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Full weekend forecast includes extreme heat

Quiet conditions are expected for the rest of the evening once the storms move out, with hot and humid weather remain in place for the metro. Temperatures will be near 90 through sunset, falling back into the lower 80s by 10 p.m. Overnight lows will only dip into the mid-70s through Saturday morning.

Closings | Interactive Radar | Weather Alerts

des moines heat index forecast saturday
Hearst Owned
Des Moines heat index forecast Saturday

Saturday and Sunday are Weather Impact days as very hot and humid conditions will result in afternoon heat index values around 105 degrees both afternoons. Plan for the hot weather if you will be outside by having plenty of water on hand and have ways to cool down. Either take breaks in the shade or in the A/C when possible. The overnight hours will not cool much, with lows in the mid to upper 70s both nights.

des moines heat index forecast for the next week
Hearst Owned
Des Moines heat index forecast for the next week

Storm chances increase on Monday as our next system begins to push into the area. The best rain chances look to be Monday night into Tuesday. This system should bring some relief from the heat, dropping our highs back into the 80s for most of next week with lows in the 60s.

Iowa weather forecast:

Today: Partly cloudy. Afternoon storm chances in northern Iowa. High 91F. Heat index values around 100. Winds S at 10 to 20 mph.

Tonight: A few clouds. Low near 74F. Winds SSE at 10 to 15 mph.

Tomorrow: Mostly sunny skies. High 95F. Heat index values around 105. Winds S at 10 to 15 mph.

Tomorrow night: A mostly clear sky. Low 75F. Winds S at 10 to 15 mph.

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