Canyon Lake Weather Forecast

    • 42
    • 68

    Slight Chance Thunderstorms

    • 43
    • 68

    Rain Showers Likely

    • 41
    • 63

    Rain Showers Likely

    • 47
    • 72

    Slight Chance Thunderstorms

    • 52
    • 84

    Slight Chance Thunderstorms

    • 56
    • 90

    Mostly Sunny

Today 20 May Rapid City

Mostly sunny in the Morning, then partly cloudy with a slight chance of rain Showers and Thunderstorms in the afternoon. Highs in the upper 60s. South Winds 10 to 20 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

Tonight 20 May Rapid City

Partly cloudy with a slight chance of Showers and Thunderstorms in the Evening, then mostly clear after midnight. Lows in the lower 40s. South Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Canyon Lake Temperature Statistics

May Temperature

Ellsworth Air Force Base (11.2 miles)

  • Lowest 6 May, 2026

    25.5 °F

  • Average May

    58.3 °F

  • Highest 13 May, 2026

    92.1 °F

Climate (2021–Present)

Ellsworth Air Force Base (11.2 miles)

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  • Average Low 2021–2026

    37.9 °F

  • Average 2021–2026

    49.6 °F

  • Average High 2021–2026

    61.3 °F
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