Casper Mountain Weather Forecast

    • 37
    • 45

    Breezy

    • 40
    • 48

    Breezy

    • 40
    • 46

    Breezy

    • 33
    • 44

    Chance Rain/Snow

    • 25
    • 38

    Slight Chance Snow Showers

    • 21
    • 31

    Mostly Sunny

Today 22 Dec Casper Mountain

Partly cloudy and windy. Highs around 50. Southwest Winds 25 to 35 Mph with Gusts up to 55 Mph.

Tonight 22 Dec Casper Mountain

Mostly clear in the Evening, then becoming partly cloudy. Breezy with Lows in the upper 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

    36.7 °F

  • Highest 14 December, 2025

    59 °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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