Humid cities · Iowa
How humid is Des Moines in summer?
Across June, July and August, the dew point in Des Moines averages about 62.8°F, which is sticky on the usual dew point scale.
July is the muggiest month, with the dew point averaging about 64.9°F. On NOAA’s hour by hour normals, about 375 hours, about 4% of the year, average a dew point of 65°F or more. That makes it the joint 49th most humid summer of the 124 US cities we track.
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The highest dew point in the forecast for the next 48 hours is about 34°F, which is dry.
Des Moines averages a summer dew point of about 62.8°F. Corn country keeps the air on the humid side of fine.
Live 48-hour forecast from OpenWeatherMap, refreshed about every half hour. Alerts from the National Weather Service.
Summer humidity at a glance
| Dew point, June to August | 62.8°F |
|---|---|
| Muggiest month | July, 64.9°F |
| Hours a year at a 65°F dew point or more | 375 (4%) |
| How summer feels | sticky |
The dew point is the temperature the air would have to cool to for dew to form, so the higher it is, the more water the air holds. Forecasters usually call under 55°F comfortable, 55 to 65°F sticky and 65°F or more muggy; 70°F or more feels tropical.
Cities with about the same summer air
- Quad Cities, Illinois and Iowa: about 62.8°F
- Indianapolis, Indiana: about 63°F
- Lincoln, Nebraska: about 63°F
More about the weather here
Source: NOAA U.S. Climate Normals, hourly, 1991 to 2020, station USW00014933. Average dew points, not the stickiest days.