Scenic Weather Forecast

    • 54
    • 75

    Increasing Clouds

    • 54
    • 86

    Partly Sunny

    • 59
    • 75

    Chance Thunderstorms

    • 55
    • 83

    Chance Rain Showers

    • 49
    • 77

    Chance Rain Showers

    • 48
    • 76

    Slight Chance Thunderstorms

Today 15 Sep Pennington Co Plains

Mostly sunny. Highs in the mid 70s. Northwest Winds 10 to 15 Mph, becoming northeast in the afternoon. Gusts up to 25 Mph.

Tonight 15 Sep Pennington Co Plains

Clear, breezy with Lows in the upper 40s. Northwest Winds 15 to 25 Mph with Gusts up to 40 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Scenic Temperature Statistics

September Temperature

Rapid City, Rapid City Regional Airport (30.4 miles)

  • Lowest 9 September, 2026

    50.6 °F

  • Average September

    72.2 °F

  • Highest 4 September, 2026

    97.6 °F

Climate (2021–2026)

Rapid City, Rapid City Regional Airport (30.4 miles)

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  • Average Low 2021–2026

    35.7 °F

  • Average 2021–2026

    49.5 °F

  • Average High 2021–2026

    63.4 °F
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