Grass Valley Weather Forecast

    • 43
    • 67

    Mostly Sunny

    • 46
    • 66

    Partly Sunny

    • 48
    • 64

    Mostly Cloudy

    • 46
    • 65

    Partly Sunny

    • 45
    • 64

    Mostly Sunny

    • 46
    • 63

    Partly Sunny

Today 19 Jan San Francisco Bay Shoreline

Partly cloudy in the morning then becoming sunny. Highs in the 60s. North Winds around 5 Mph.

Tonight 19 Jan San Francisco Bay Shoreline

Mostly clear in the evening then becoming partly cloudy. Lows in the lower 40s. Northeast Winds around 5 Mph.

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Grass Valley Temperature Statistics

January Temperature

Oakland, Metro Oakland International Airport (5 miles)

  • Lowest 10 January, 2026

    37 °F

  • Average January

    51.5 °F

  • Highest 16 January, 2026

    64.9 °F

Climate (2021–Present)

Oakland, Metro Oakland International Airport (5 miles)

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  • Average Low 2021–2026

    51 °F

  • Average 2021–2026

    58.6 °F

  • Average High 2021–2026

    66.8 °F
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