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Iowa Swelters: Heat Index to Surpass 100 Degrees
31 Aug
Summary
- Iowa will experience extreme heat starting the week of August 31st.
- Heat index values are expected to climb above 100 degrees Fahrenheit.
- A heat advisory is in effect for much of central and southern Iowa.

Extreme heat is forecasted for Iowa during the week of August 31st, with temperatures predicted to surpass 90 degrees and the heat index potentially exceeding 100 degrees. The National Weather Service has issued a heat advisory covering central and southern Iowa, including Des Moines, effective from Monday, August 31st, through Wednesday, September 2nd. The heat index in Des Moines is expected to reach 100 degrees by noon on Monday and continue to top 100 degrees on Tuesday and Wednesday. Overnight lows will remain warm, in the mid to upper 70s. There is a 20% chance of showers and thunderstorms in Des Moines on Monday afternoon and early Tuesday.