Summer temperatures · Iowa
How hot does Des Moines get in summer?
In a typical summer, June to August, Des Moines averages highs around 84°F and lows around 64°F.
About 22 days a year reach 90°F or hotter, and about one reaches 100°F. About 97 days a year get to 80°F or warmer. That makes it the 65th coolest summer of the 129 US cities we track.
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The hottest high in the forecast for the next 48 hours is about 48°F.
Des Moines averages summer highs around 84°F and winter highs around 34°F, so every garage here holds a box fan and an ice scraper side by side.
Live 48-hour forecast from OpenWeatherMap, refreshed about every half hour. Alerts from the National Weather Service.
Summer at a glance
| Average summer high | 84°F |
|---|---|
| Average summer low | 64°F |
| Days a year at 80°F or warmer | 97 |
| Days a year at 90°F or hotter | 22 |
| Days a year at 100°F or hotter | 1 |
| Average winter high, for comparison | 34°F |
Summer here is June to August. Counts are averages a year.
Cities with about the same summer
- Reno, Nevada: highs around 90°F, lows around 57°F
- Columbus, Ohio: highs around 84°F, lows around 64°F
- Quad Cities, Illinois and Iowa: highs around 85°F, lows around 63°F
More about the weather here
Source: NOAA U.S. Climate Normals, 1991 to 2020, station USW00014933.