Upper Mississippi Waterfowl Area Weather Forecast

    • 76
    • 91

    Isolated Thunderstorms

    • 78
    • 97

    Hot

    • 76
    • 97

    Slight Chance Thunderstorms

    • 75
    • 91

    Slight Chance Thunderstorms

    • 76
    • 93

    Slight Chance Thunderstorms

    • 75
    • 94

    Mostly Sunny

Today 22 Jul St. Charles

Sunny late this Morning, then becoming partly sunny. Isolated Showers and Thunderstorms this afternoon. Highs in the lower 90s. Southeast Winds around 5 Mph. Chance of rain 20 percent. Heat index Values up to 108 this afternoon.

Tonight 22 Jul St. Charles

Partly cloudy. Isolated Showers and Thunderstorms in the evening. Humid with Lows in the mid 70s. Southeast Winds around 5 Mph. Chance of rain 20 percent. Heat index Values up to 106 early in the evening.

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Upper Mississippi Waterfowl Area Temperature Statistics

July Temperature

St. Louis Regional Airport (9.3 miles)

  • Lowest 2 July, 2025

    63.9 °F

  • Average July

    76.3 °F

  • Highest 4 July, 2025

    91.4 °F

Climate (2020–Present)

St. Louis Regional Airport (9.3 miles)

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  • Average Low 2020–2025

    46 °F

  • Average 2020–2025

    53.8 °F

  • Average High 2020–2025

    65.9 °F
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