Boysen State Park Weather Forecast

    • 53
    • 86

    Mostly Sunny

    • 43
    • 73

    Mostly Sunny

    • 48
    • 73

    Mostly Sunny

    • 47
    • 73

    Partly Sunny

    • 48
    • 73

    Mostly Sunny

    • 47
    • 73

    Mostly Sunny

Today 13 Sep Wind River Basin

Mostly sunny and breezy. Highs in the mid 80s. Southeast Winds around 10 Mph with Gusts up to 25 Mph, increasing to southwest 20 to 25 Mph with Gusts up to 35 Mph in the afternoon.

Tonight 13 Sep Wind River Basin

Partly cloudy. Lows in the upper 40s. Northeast Winds around 10 Mph with Gusts up to 20 Mph.

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Boysen State Park Temperature Statistics

September Temperature

Riverton Regional Airport (21.7 miles)

  • Lowest 9 September, 2026

    42.1 °F

  • Average September

    69 °F

  • Highest 5 September, 2026

    89.7 °F

Climate (2021–2026)

Riverton Regional Airport (21.7 miles)

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  • Average Low 2021–2026

    33.7 °F

  • Average 2021–2026

    46.6 °F

  • Average High 2021–2026

    59.6 °F
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