Boysen State Park Weather Forecast

    • 28
    • 52

    Rain/Snow

    • 12
    • 46

    Chance Snow Showers

    • 9
    • 29

    Mostly Sunny

    • 16
    • 33

    Mostly Sunny

    • 18
    • 39

    Partly Sunny

    • 22
    • 44

    Mostly Cloudy

Today 26 Dec Wind River Basin

Partly cloudy. A chance of rain and snow this afternoon. Windy with Highs in the upper 40s. Southwest Winds 20 to 30 Mph with Gusts up to 45 Mph. Chance of precipitation 30 percent.

Tonight 26 Dec Wind River Basin

Mostly cloudy in the Evening, then becoming partly cloudy. A chance of rain in the evening. A chance of snow. Breezy with Lows around 30. Southwest Winds 15 to 25 Mph with Gusts up to 35 Mph. Chance of precipitation 30 percent.

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Boysen State Park Temperature Statistics

December Temperature

Riverton Regional Airport (21.7 miles)

  • Lowest 1 December, 2025

    3 °F

  • Average December

    37.8 °F

  • Highest 16 December, 2025

    62.1 °F

Climate (2020–Present)

Riverton Regional Airport (21.7 miles)

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  • Average Low 2020–2025

    33.1 °F

  • Average 2020–2025

    45.8 °F

  • Average High 2020–2025

    58.6 °F
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