Windy cities · Iowa
How windy is Sioux City?
Across a typical year, the wind in Sioux City averages about 10.2 mph.
April is the windiest month, at about 12.2 mph, and August the calmest, at about 7.7 mph. There’s no wind at all about 7% of the time. That makes it the joint 17th windiest of the 124 US cities we track.
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The strongest average wind in the forecast for the next 48 hours is about 10 mph.
Sioux City averages about 10.2 mph and drops to about 7.7 in August, the one month the corn can hear itself grow.
Live 48-hour forecast from OpenWeatherMap, refreshed about every half hour. Alerts from the National Weather Service.
The wind at a glance
| Average wind speed, all year | 10.2 mph |
|---|---|
| Windiest month | April, 12.2 mph |
| Calmest month | August, 7.7 mph |
| Hours with no wind at all | 7% |
Average wind speeds across every hour of a typical year, not gusts.
Cities with about the same wind
- Kansas City, Missouri: about 10.2 mph
- Buffalo, New York: about 10.1 mph
- Sioux Falls, South Dakota: about 10.1 mph
More about the weather here
Source: NOAA U.S. Climate Normals, hourly, 1991 to 2020, station USW00014943. Average wind speed, not gusts.