Casper Mountain County Park Weather Forecast

    • 57
    • 71

    Isolated Thunderstorms

    • 57
    • 75

    Mostly Sunny

    • 60
    • 79

    Mostly Sunny

    • 60
    • 81

    Mostly Sunny

    • 57
    • 77

    Partly Sunny

    • 53
    • 71

    Chance Thunderstorms

Today 17 Aug Casper Mountain

Mostly sunny in the Morning, then becoming partly cloudy. A slight chance of. Highs in the mid 70s. Southwest Winds 10 to 15 Mph.

Tonight 17 Aug Casper Mountain

Partly cloudy. Lows in the mid 50s. Southwest Winds around 10 Mph.

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Casper Mountain County Park Temperature Statistics

August Temperature

Casper, Natrona County International Airport (13.7 miles)

  • Lowest 9 August, 2025

    39.7 °F

  • Average August

    70.9 °F

  • Highest 7 August, 2025

    98.7 °F

Climate (2020–Present)

Casper, Natrona County International Airport (13.7 miles)

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  • Average Low 2020–2025

    32.5 °F

  • Average 2020–2025

    46.6 °F

  • Average High 2020–2025

    60.2 °F
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