Custer Weather Forecast

    • 35
    • 49

    Slight Chance Rain Showers

    • 31
    • 45

    Mostly Cloudy

    • 19
    • 49

    Rain/Snow Likely

    • 30
    • 38

    Chance Rain Showers

    • 23
    • 49

    Chance Rain/Snow

    • 21
    • 38

    Chance Snow Showers

    • 18
    • 38

    Mostly Cloudy

Today 15 Dec Northeastern Yellowstone

Mostly sunny. Warmer. Highs in the lower 50s. Southwest Winds 5 to 15 Mph.

Tonight 15 Dec Northeastern Yellowstone

Mostly cloudy. A 20 percent chance of rain Showers early in the evening. Lows in the mid 30s. Southwest Winds 10 to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Custer Temperature Statistics

December Temperature

Billings, Billings Logan International Airport (52.2 miles)

  • Lowest 12 December, 2025

    3.9 °F

  • Average December

    30.9 °F

  • Highest 11 December, 2025

    61 °F

Climate (2020–Present)

Billings, Billings Logan International Airport (52.2 miles)

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  • Average Low 2020–2025

    38.7 °F

  • Average 2020–2025

    49.5 °F

  • Average High 2020–2025

    60.6 °F
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