Sully Creek State Recreation Area Weather Forecast

    • 55
    • 80

    Chance Rain Showers

    • 51
    • 73

    Chance Rain Showers

    • 48
    • 65

    Chance Rain Showers

    • 47
    • 70

    Partly Sunny

    • 50
    • 76

    Partly Sunny

    • 51
    • 81

    Partly Sunny

    • 47
    • 75

    Mostly Sunny

Today 16 Sep Billings

Mostly sunny. Highs in the upper 70s. North Winds around 5 Mph.

Tonight 16 Sep Billings

Mostly cloudy with a slight chance of Thunderstorms. A slight chance of Showers in the Evening, then a chance of Showers after midnight. Lows in the mid 50s. Northeast Winds around 5 Mph. Chance of rain 30 percent.

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Sully Creek State Recreation Area Temperature Statistics

September Temperature

BEACH (20.5 miles)

  • Lowest 6 September, 2025

    28.4 °F

  • Average September

    62.8 °F

  • Highest 1 September, 2025

    87.8 °F

Climate (2020–Present)

BEACH (20.5 miles)

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  • Average Low 2020–2025

    30.9 °F

  • Average 2020–2025

    43.4 °F

  • Average High 2020–2025

    55.3 °F
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