Major Lake Weather Forecast

    • 56
    • 86

    Slight Chance Thunderstorms

    • 60
    • 79

    Chance Thunderstorms

    • 62
    • 87

    Slight Chance Thunderstorms

    • 58
    • 86

    Chance Thunderstorms

    • 56
    • 80

    Chance Thunderstorms

    • 58
    • 80

    Slight Chance Thunderstorms

    • 57
    • 82

    Slight Chance Thunderstorms

Today 21 Aug Central Black Hills

Partly cloudy with a slight chance of Showers and Thunderstorms. Highs in the mid 80s. East Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 20 percent.

Tonight 21 Aug Central Black Hills

Mostly clear with a slight chance of Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Lows in the upper 50s. Northeast Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

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Major Lake Temperature Statistics

August Temperature

Custer, Custer County Airport (13.7 miles)

  • Lowest 4 August, 2026

    42.7 °F

  • Average August

    66.8 °F

  • Highest 2 August, 2026

    93.7 °F

Climate (2021–2026)

Custer, Custer County Airport (13.7 miles)

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  • Average Low 2021–2026

    33.5 °F

  • Average 2021–2026

    45.3 °F

  • Average High 2021–2026

    56.9 °F
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