Grass Valley Weather Forecast

    • 59
    • 87

    Sunny

    • 53
    • 78

    Mostly Sunny

    • 54
    • 77

    Mostly Sunny

    • 56
    • 79

    Mostly Sunny

    • 55
    • 79

    Mostly Sunny

    • 54
    • 78

    Sunny

Today 20 Jul Motherlode

Sunny. Highs 85 to 95. Light Winds becoming southwest up to 10 Mph in the afternoon.

Tonight 20 Jul Motherlode

Clear. Lows 55 to 65. Prevailing southwest Winds up to 10 Mph in the evening becoming light.

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  • Temperature Real-Time

Grass Valley Temperature Statistics

July Temperature

Nevada County Air Park (3.1 miles)

  • Lowest 4 July, 2025

    60.8 °F

  • Average July

    77.2 °F

  • Highest 11 July, 2025

    91.4 °F

Climate (2020–Present)

Nevada County Air Park (3.1 miles)

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  • Average Low 2020–2025

    52.1 °F

  • Average 2020–2025

    60.6 °F

  • Average High 2020–2025

    68.9 °F
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