Rapid Valley Weather Forecast

    • 43
    • 71

    Mostly Sunny

    • 51
    • 92

    Slight Chance Rain Showers

    • 45
    • 77

    Mostly Sunny

    • 59
    • 89

    Partly Sunny

    • 54
    • 90

    Partly Sunny

    • 52
    • 78

    Slight Chance Thunderstorms

    • 48
    • 75

    Slight Chance Thunderstorms

Today 10 May Rapid City

Partly cloudy. Highs in the upper 60s. East Winds 5 to 10 Mph.

Tonight 10 May Rapid City

Mostly clear. Lows in the mid 40s. South Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rapid Valley Temperature Statistics

May Temperature

Rapid City, Rapid City Regional Airport (4.3 miles)

  • Lowest 6 May, 2026

    23.6 °F

  • Average May

    48.9 °F

  • Highest 2 May, 2026

    80.7 °F

Climate (2021–Present)

Rapid City, Rapid City Regional Airport (4.3 miles)

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  • Average Low 2021–2026

    35.7 °F

  • Average 2021–2026

    49.4 °F

  • Average High 2021–2026

    63.2 °F
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