Rapid City Regional Airport Weather Forecast

    • 36
    • 70

    Decreasing Clouds

    • 33
    • 64

    Partly Sunny

    • 9
    • 53

    Chance Snow

    • 6
    • 24

    Mostly Sunny

    • 21
    • 40

    Partly Sunny

    • 22
    • 51

    Partly Sunny

Today 25 Dec Pennington Co Plains

Mostly cloudy. Highs in the mid 60s. Southwest Winds 10 to 15 Mph with Gusts up to 35 Mph.

Tonight 25 Dec Pennington Co Plains

Partly cloudy in the Evening, then clearing. Lows in the mid 30s. Southwest Winds 10 to 15 Mph. Gusts up to 25 Mph in the evening.

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Rapid City Regional Airport Temperature Statistics

December Temperature

Rapid City, Rapid City Regional Airport (0 miles)

  • Lowest 1 December, 2025

    1.9 °F

  • Average December

    32.9 °F

  • Highest 17 December, 2025

    66 °F

Climate (2020–Present)

Rapid City, Rapid City Regional Airport (0 miles)

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  • Average Low 2020–2025

    35.5 °F

  • Average 2020–2025

    48.9 °F

  • Average High 2020–2025

    62.4 °F
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