Legion Lake Weather Forecast

    • 24
    • 40

    Increasing Clouds

    • 30
    • 45

    Mostly Cloudy

    • 27
    • 52

    Chance Snow

    • 22
    • 39

    Snow Likely

    • 5
    • 30

    Chance Snow

    • 6
    • 19

    Slight Chance Snow

Today 7 Dec Central Black Hills

Partly cloudy with a chance of snow this Morning, then mostly sunny this afternoon. Little or no snow accumulation. Highs in the mid 30s. Northwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of snow 50 percent.

Tonight 7 Dec Central Black Hills

Partly cloudy. Lows in the lower 20s. West Winds 5 to 10 Mph with Gusts up to 25 Mph.

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Legion Lake Temperature Statistics

December Temperature

Custer, Custer County Airport (7.5 miles)

  • Lowest 1 December, 2025

    7 °F

  • Average December

    24.7 °F

  • Highest 2 December, 2025

    34 °F

Climate (2020–Present)

Custer, Custer County Airport (7.5 miles)

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  • Average Low 2020–2025

    33.2 °F

  • Average 2020–2025

    44.8 °F

  • Average High 2020–2025

    56.2 °F
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