Fort Zumwalt Park Weather Forecast

    • 76
    • 94

    Isolated Thunderstorms

    • 77
    • 97

    Hot

    • 76
    • 97

    Slight Chance Thunderstorms

    • 75
    • 94

    Slight Chance Thunderstorms

    • 75
    • 94

    Slight Chance Thunderstorms

    • 75
    • 95

    Mostly Sunny

    • 76
    • 95

    Mostly Sunny

Today 22 Jul St. Charles

Partly sunny with isolated Showers and Thunderstorms. Near steady temperature in the lower 90s. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 110.

Tonight 22 Jul St. Charles

Partly cloudy. Isolated Showers and Thunderstorms this evening. Lows in the mid 70s. Southeast Winds around 5 Mph. Chance of rain 20 percent. Heat index Values up to 107 early this evening.

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Fort Zumwalt Park Temperature Statistics

July Temperature

St. Louis, Spirit Of St. Louis Airport (9.9 miles)

  • Lowest 2 July, 2025

    62.7 °F

  • Average July

    80.4 °F

  • Highest 16 July, 2025

    95.6 °F

Climate (2020–Present)

St. Louis, Spirit Of St. Louis Airport (9.9 miles)

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  • Average Low 2020–2025

    45.8 °F

  • Average 2020–2025

    56.8 °F

  • Average High 2020–2025

    68 °F
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