Sylvan Lake Weather Forecast

    • 22
    • 34

    Mostly Sunny

    • 27
    • 44

    Decreasing Clouds

    • 34
    • 49

    Partly Sunny

    • 30
    • 51

    Partly Sunny

    • 28
    • 51

    Chance Snow

    • 24
    • 39

    Slight Chance Snow

    • 29
    • 47

    Mostly Sunny

Today 21 Feb Central Black Hills

Partly cloudy. Highs in the 30s to mid 40s. South Winds around 5 Mph with Gusts up to 20 Mph.

Tonight 21 Feb Central Black Hills

Mostly clear. Lows in the lower 20s. West Winds 5 to 10 Mph with Gusts up to 20 Mph.

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  • Temperature Real-Time

Sylvan Lake Temperature Statistics

February Temperature

Custer, Custer County Airport (8.1 miles)

  • Lowest 19 February, 2025

    -23.1 °F

  • Average February

    13 °F

  • Highest 5 February, 2025

    50.6 °F

Climate (2020–Present)

Custer, Custer County Airport (8.1 miles)

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  • Average Low 2020–2025

    33 °F

  • Average 2020–2025

    44.6 °F

  • Average High 2020–2025

    55.9 °F
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