Lewis and Clark State Memorial Park Weather Forecast

    • 75
    • 91

    Isolated Thunderstorms

    • 77
    • 97

    Hot

    • 76
    • 97

    Slight Chance Thunderstorms

    • 75
    • 91

    Slight Chance Thunderstorms

    • 76
    • 93

    Slight Chance Thunderstorms

    • 75
    • 94

    Mostly Sunny

Today 22 Jul Madison

Mostly sunny with isolated Showers and Thunderstorms. Near steady temperature in the upper 80s. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 106.

Tonight 22 Jul Madison

Mostly cloudy with isolated Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Humid with Lows in the mid 70s. Southeast Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 103 early in the evening.

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Lewis and Clark State Memorial Park Temperature Statistics

July Temperature

St. Louis Regional Airport (7.5 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 (7.5 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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