Arapahoe Reservoir Weather Forecast

    • 57
    • 83

    Thunderstorms

    • 55
    • 81

    Isolated Thunderstorms

    • 55
    • 78

    Slight Chance Thunderstorms

    • 55
    • 77

    Slight Chance Thunderstorms

    • 53
    • 71

    Chance Rain Showers

    • 53
    • 72

    Chance Rain Showers

Today 21 Aug Wind River Basin

Partly cloudy. Areas of smoke this morning. Scattered Showers and Thunderstorms this afternoon. Some Thunderstorms may produce gusty Winds this afternoon. Highs in the upper 80s. Northeast Winds 10 to 15 Mph, becoming southeast this afternoon. Gusts up to 30 Mph. Chance of rain 30 percent.

Tonight 21 Aug Wind River Basin

Mostly cloudy with isolated dry Thunderstorms in the Evening, then partly cloudy after midnight. Some Thunderstorms may produce gusty Winds in the evening. Lows in the upper 50s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Arapahoe Reservoir Temperature Statistics

August Temperature

Riverton Regional Airport (29.8 miles)

  • Lowest 9 August, 2025

    47.6 °F

  • Average August

    73 °F

  • Highest 6 August, 2025

    95.6 °F

Climate (2020–Present)

Riverton Regional Airport (29.8 miles)

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  • Average Low 2020–2025

    32.6 °F

  • Average 2020–2025

    45.4 °F

  • Average High 2020–2025

    58.3 °F
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