Grass Valley Weather Forecast

    • 48
    • 72

    Sunny

    • 47
    • 74

    Rain Showers Likely

    • 35
    • 55

    Chance Rain Showers

    • 39
    • 62

    Sunny

    • 46
    • 71

    Mostly Sunny

    • 49
    • 76

    Mostly Sunny

    • 48
    • 78

    Mostly Sunny

Today 1 May North Central Oregon

Sunny. Highs in the mid to upper 70s. Light Wind, becoming east 5 to 10 Mph in the afternoon.

Tonight 1 May North Central Oregon

Mostly clear. Lows in the upper 40s to lower 50s. Northeast wind 5 to 10 Mph in the Evening, becoming light.

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Grass Valley Temperature Statistics

May Temperature

The Dalles Municipal Airport (25.5 miles)

  • Lowest

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  • Average May

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Climate (2020–Present)

The Dalles Municipal Airport (25.5 miles)

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  • Average Low 2020–2025

    45.9 °F

  • Average 2020–2025

    56.1 °F

  • Average High 2020–2025

    66.6 °F
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