Casper Mountain Weather Forecast

    • 32
    • 42

    Breezy

    • 34
    • 40

    Breezy

    • 18
    • 42

    Rain/Snow

    • 32
    • 35

    Breezy

    • 30
    • 44

    Chance Snow Showers

    • 28
    • 37

    Partly Sunny

    • 34
    • 36

    Mostly Cloudy

Today 15 Dec Casper Mountain

Mostly sunny and breezy. Highs in the upper 40s. Southwest Winds 15 to 25 Mph with Gusts up to 40 Mph.

Tonight 15 Dec Casper Mountain

Mostly clear in the Evening, then becoming partly cloudy. Breezy with Lows in the lower 30s. Southwest Winds 20 to 25 Mph with Gusts up to 45 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Casper Mountain Temperature Statistics

December Temperature

Casper, Natrona County International Airport (13 miles)

  • Lowest 1 December, 2025

    6.1 °F

  • Average December

    33.9 °F

  • Highest 11 December, 2025

    57.9 °F

Climate (2020–Present)

Casper, Natrona County International Airport (13 miles)

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  • Average Low 2020–2025

    32.9 °F

  • Average 2020–2025

    46.9 °F

  • Average High 2020–2025

    60.4 °F
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