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    Windy cities · Missouri

    How windy is St. Louis?

    Across a typical year, the wind in St. Louis averages about 8.8 mph.

    March is the windiest month, at about 10.3 mph, and August the calmest, at about 7.1 mph. There’s no wind at all about 8% of the time. That makes it the joint 50th 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 2 mph.

    St. Louis averages about 8.8 mph and about 10.3 in March, so the Arch gets a spring workout.

    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 year8.8 mph
    Windiest monthMarch, 10.3 mph
    Calmest monthAugust, 7.1 mph
    Hours with no wind at all8%

    Average wind speeds across every hour of a typical year, not gusts.

    Cities with about the same wind

    Every city’s wind, windiest first

    More about the weather here

    Source: NOAA U.S. Climate Normals, hourly, 1991 to 2020, station USW00013994. Average wind speed, not gusts.