Custer Weather Forecast

    • 40
    • 63

    Mostly Sunny

    • 40
    • 75

    Partly Sunny

    • 37
    • 64

    Mostly Sunny

    • 39
    • 68

    Mostly Sunny

    • 41
    • 70

    Partly Sunny

    • 41
    • 64

    Partly Sunny

    • 45
    • 68

    Partly Sunny

Today 16 Oct Northeastern Yellowstone

Partly sunny with a 50 percent chance of rain Showers. Highs in the lower 60s.

Tonight 16 Oct Northeastern Yellowstone

Mostly clear. Warmer. Lows around 40. West Winds 5 to 15 Mph.

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  • Temperature Real-Time

Custer Temperature Statistics

October Temperature

Billings, Billings Logan International Airport (52.2 miles)

  • Lowest 14 October, 2026

    32 °F

  • Average October

    56.2 °F

  • Highest 5 October, 2026

    88.6 °F

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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