Brown Field Weather Forecast

    • 65
    • 93

    Slight Chance Thunderstorms

    • 67
    • 94

    Mostly Sunny

    • 67
    • 103

    Hot

    • 60
    • 88

    Chance Thunderstorms

    • 60
    • 85

    Slight Chance Thunderstorms

    • 60
    • 86

    Partly Sunny

Today 5 Aug Custer Co Plains

Sunny with a slight chance of Showers and Thunderstorms. Highs in the lower 90s. Northeast Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.

Tonight 5 Aug Custer Co Plains

Mostly clear. A slight chance of Showers and Thunderstorms in the evening. Lows in the mid 60s. North Winds 10 to 15 Mph. Gusts up to 25 Mph in the evening. Chance of rain 20 percent.

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Brown Field Temperature Statistics

August Temperature

Rapid City, Rapid City Regional Airport (23 miles)

  • Lowest 2 August, 2025

    60.1 °F

  • Average August

    72.2 °F

  • Highest 1 August, 2025

    85.6 °F

Climate (2020–Present)

Rapid City, Rapid City Regional Airport (23 miles)

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  • Average Low 2020–2025

    35.2 °F

  • Average 2020–2025

    48.6 °F

  • Average High 2020–2025

    62.1 °F
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