Lewis & Clark Caverns State Park Weather Forecast

    • 52
    • 84

    Rain Showers Likely

    • 55
    • 90

    Partly Sunny

    • 56
    • 96

    Mostly Sunny

    • 55
    • 92

    Mostly Sunny

    • 51
    • 88

    Mostly Sunny

    • 51
    • 86

    Mostly Sunny

Today 17 Aug Missouri Headwaters

Mostly cloudy. Rain Showers likely and chance of Thunderstorms in the afternoon. Highs 80 to 85. Southwest Winds up to 5 Mph shifting to the northwest 5 to 15 Mph in the afternoon. Chance of precipitation 70 percent.

Tonight 17 Aug Missouri Headwaters

Haze in the evening. Mostly cloudy with a 50 percent chance of Thunderstorms in the Evening, then partly cloudy after midnight. Lows 50 to 55. Southwest Winds up to 10 Mph.

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Lewis & Clark Caverns State Park Temperature Statistics

August Temperature

Butte, Bert Mooney Airport (31.7 miles)

  • Lowest 9 August, 2025

    39.7 °F

  • Average August

    62.5 °F

  • Highest 12 August, 2025

    87.7 °F

Climate (2020–Present)

Butte, Bert Mooney Airport (31.7 miles)

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  • Average Low 2020–2025

    27.7 °F

  • Average 2020–2025

    41.6 °F

  • Average High 2020–2025

    55 °F
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