Big Rock Park Weather Forecast

    • 61
    • 90

    Chance Thunderstorms

    • 60
    • 84

    Chance Thunderstorms

    • 61
    • 87

    Rain Showers Likely

    • 58
    • 86

    Chance Thunderstorms

    • 59
    • 86

    Chance Thunderstorms

    • 60
    • 87

    Mostly Sunny

    • 63
    • 92

    Mostly Sunny

Today 27 Jul Central Black Hills

Mostly cloudy with a chance of Showers and Thunderstorms. Highs in the upper 80s to mid 90s. Southwest Winds 5 to 10 Mph with Gusts up to 25 Mph. Chance of rain 50 percent.

Tonight 27 Jul Central Black Hills

Partly cloudy. A slight chance of Showers and Thunderstorms this evening. Lows in the mid 60s. East Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming southwest. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Rock Park Temperature Statistics

July Temperature

Custer, Custer County Airport (1.9 miles)

  • Lowest 3 July, 2026

    50.6 °F

  • Average July

    71.1 °F

  • Highest 25 July, 2026

    96.1 °F

Climate (2021–2026)

Custer, Custer County Airport (1.9 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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