Custer Weather Forecast

    • 56
    • 83

    Gradual Clearing

    • 55
    • 90

    Partly Sunny

    • 53
    • 86

    Mostly Sunny

    • 55
    • 87

    Mostly Sunny

    • 58
    • 83

    Partly Sunny

    • 58
    • 81

    Chance Rain Showers

Today 1 Sep Northeastern Yellowstone

Mostly cloudy. A 20 percent chance of rain Showers in the afternoon. Highs in the lower 80s. Southwest Winds 5 to 10 Mph.

Tonight 1 Sep Northeastern Yellowstone

Partly cloudy. Lows in the upper 50s. South Winds 5 to 10 Mph.

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Custer Temperature Statistics

September Temperature

Billings, Billings Logan International Airport (52.2 miles)

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  • Average September

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Climate (2021–2026)

Billings, Billings Logan International Airport (52.2 miles)

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  • Average Low 2021–2026

    39.1 °F

  • Average 2021–2026

    50 °F

  • Average High 2021–2026

    61.2 °F
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