Legion Lake Weather Forecast

    • 59
    • 81

    Areas Smoke

    • 59
    • 89

    Areas Smoke

    • 61
    • 85

    Mostly Sunny

    • 62
    • 89

    Mostly Sunny

    • 61
    • 89

    Partly Sunny

    • 59
    • 82

    Chance Thunderstorms

    • 59
    • 81

    Chance Thunderstorms

Today 5 Aug Central Black Hills

Mostly sunny. Areas of smoke. Highs in the mid 70s to lower 80s. West Winds 5 to 10 Mph with Gusts up to 25 Mph.

Tonight 5 Aug Central Black Hills

Mostly clear. Areas of smoke. Lows in the mid 50s. West Winds 5 to 10 Mph. Gusts up to 20 Mph this evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Legion Lake Temperature Statistics

August Temperature

Custer, Custer County Airport (7.5 miles)

  • Lowest 3 August, 2026

    50 °F

  • Average August

    71.6 °F

  • Highest 2 August, 2026

    93.7 °F

Climate (2021–2026)

Custer, Custer County Airport (7.5 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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