Boysen State Park Weather Forecast

    • 31
    • 52

    Partly Sunny

    • 25
    • 49

    Partly Sunny

    • 25
    • 51

    Partly Sunny

    • 31
    • 51

    Partly Sunny

    • 34
    • 55

    Partly Sunny

    • 25
    • 52

    Partly Sunny

Today 12 Dec Wind River Basin

Partly cloudy. Highs in the lower 50s. West Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 12 Dec Wind River Basin

Partly cloudy and breezy. Lows in the lower 30s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph.

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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

    30.7 °F

  • Highest 9 December, 2025

    57 °F

Climate (2020–Present)

Riverton Regional Airport (21.7 miles)

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  • Average Low 2020–2025

    33 °F

  • Average 2020–2025

    45.7 °F

  • Average High 2020–2025

    58.5 °F
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