Grass Valley Weather Forecast

    • 44
    • 64

    Decreasing Clouds

    • 44
    • 66

    Partly Sunny

    • 40
    • 63

    Partly Sunny

    • 41
    • 64

    Sunny

    • 43
    • 66

    Sunny

    • 44
    • 69

    Sunny

Today 30 Jan Motherlode

Mostly cloudy in the morning then becoming partly cloudy. Highs 62 to 68. Light Winds.

Tonight 30 Jan Motherlode

Partly cloudy. Lows 42 to 52. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grass Valley Temperature Statistics

January Temperature

Nevada County Air Park (3.1 miles)

  • Lowest 8 January, 2026

    32 °F

  • Average January

    51.1 °F

  • Highest 15 January, 2026

    73.4 °F

Climate (2021–Present)

Nevada County Air Park (3.1 miles)

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  • Average Low 2021–2026

    52.1 °F

  • Average 2021–2026

    60.4 °F

  • Average High 2021–2026

    68.8 °F
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