Grass Valley Reservoir Weather Forecast

    • 41
    • 61

    Chance Rain Showers

    • 44
    • 67

    Partly Sunny

    • 43
    • 68

    Rain Showers

    • 36
    • 55

    Rain Showers

    • 34
    • 45

    Rain/Snow Likely

    • 38
    • 53

    Chance Rain Showers

    • 42
    • 61

    Slight Chance Rain Showers

Today 1 May Southern Mountains

Partly sunny. A slight chance of snow Showers and rain Showers in the Morning, then a chance of snow Showers, rain Showers and a slight chance of Thunderstorms in the afternoon. Highs in the upper 40s. Chance of precipitation 50 percent.

Tonight 1 May Southern Mountains

Mostly clear. Lows in the mid 30s.

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Grass Valley Reservoir Temperature Statistics

May Temperature

St George Municipal Airport (25.5 miles)

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Climate (2020–Present)

St George Municipal Airport (25.5 miles)

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  • Average Low 2020–2025

    52.2 °F

  • Average 2020–2025

    64.3 °F

  • Average High 2020–2025

    76.6 °F
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