Powder River Weather Forecast

    • 55
    • 89

    Mostly Sunny

    • 60
    • 88

    Chance Rain Showers

    • 49
    • 78

    Breezy

    • 45
    • 75

    Mostly Sunny

    • 52
    • 79

    Partly Sunny

    • 53
    • 81

    Partly Sunny

Today 5 Sep Natrona County Lower Elevations

Mostly sunny. Highs around 90. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph.

Tonight 5 Sep Natrona County Lower Elevations

Clear. Lows around 60. South Winds 10 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Powder River Temperature Statistics

September Temperature

Casper, Natrona County International Airport (27.3 miles)

  • Lowest 1 September, 2026

    58.6 °F

  • Average September

    71.1 °F

  • Highest 2 September, 2026

    84 °F

Climate (2021–2026)

Casper, Natrona County International Airport (27.3 miles)

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  • Average Low 2021–2026

    33.3 °F

  • Average 2021–2026

    47.7 °F

  • Average High 2021–2026

    61.6 °F
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