Harney Peak Weather Forecast

    • 65
    • 83

    Mostly Sunny

    • 63
    • 85

    Mostly Sunny

    • 61
    • 80

    Chance Thunderstorms

    • 58
    • 78

    Chance Rain Showers

    • 52
    • 74

    Mostly Sunny

    • 53
    • 73

    Partly Sunny

Today 4 Sep Central Black Hills

Sunny. Highs in the upper 80s. Southwest Winds 5 to 10 Mph with Gusts up to 25 Mph.

Tonight 4 Sep Central Black Hills

Mostly clear. Lows in the lower 60s. Southwest Winds 5 to 10 Mph. Gusts up to 20 Mph in the evening.

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Harney Peak Temperature Statistics

September Temperature

Custer, Custer County Airport (9.9 miles)

  • Lowest 2 September, 2026

    51.1 °F
  • Average September

    65.6 °F
  • Highest 2 September, 2026

    82 °F

Climate (2021–2026)

Custer, Custer County Airport (9.9 miles)

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  • Average Low 2021–2026

    33.6 °F
  • Average 2021–2026

    45.4 °F
  • Average High 2021–2026

    56.9 °F
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