Granite Park Weather Forecast

    • 36
    • 62

    Chance Rain Showers

    • 42
    • 60

    Mostly Cloudy

    • 44
    • 69

    Chance Rain/Snow

    • 35
    • 59

    Mostly Sunny

    • 40
    • 59

    Mostly Sunny

    • 40
    • 60

    Slight Chance Thunderstorms

    • 44
    • 66

    Slight Chance Thunderstorms

Today 11 Sep Bighorn Mountains Southeast

Partly cloudy with a chance of Showers with a slight chance of Thunderstorms. Breezy with Highs in the upper 60s. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 30 percent.

Tonight 11 Sep Bighorn Mountains Southeast

Partly cloudy and breezy. Lows in the upper 30s. Northeast Winds 15 to 20 Mph, becoming southeast 10 to 15 Mph after midnight.

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Granite Park Temperature Statistics

September Temperature

Sheridan County Airport (16.8 miles)

  • Lowest 8 September, 2026

    39.7 °F

  • Average September

    67.9 °F

  • Highest 4 September, 2026

    97.6 °F

Climate (2021–2026)

Sheridan County Airport (16.8 miles)

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  • Average Low 2021–2026

    33.4 °F

  • Average 2021–2026

    47.6 °F

  • Average High 2021–2026

    62.2 °F
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