San Francisco Bay - East Brother Lighthouse Weather Forecast

    • 42
    • 51

    Becoming Sunny

    • 43
    • 52

    Mostly Cloudy

    • 43
    • 53

    Partly Sunny

    • 45
    • 54

    Mostly Sunny

    • 47
    • 55

    Partly Sunny

    • 49
    • 57

    Mostly Sunny

Today 9 Jan San Francisco Bay Shoreline

Partly cloudy in the morning then becoming sunny. Highs in the mid 50s. Northeast Winds 5 to 10 Mph.

Tonight 9 Jan San Francisco Bay Shoreline

Clear except for frost after midnight. Lows in the mid 30s to lower 40s. Northeast Winds 5 to 10 Mph.

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San Francisco Bay - East Brother Lighthouse Temperature Statistics

January Temperature

Novato / Gnoss Field (13.7 miles)

  • Lowest 6 January, 2026

    46.4 °F

  • Average January

    54.1 °F

  • Highest 3 January, 2026

    62.6 °F

Climate (2021–Present)

Novato / Gnoss Field (13.7 miles)

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  • Average Low 2021–2026

    46.3 °F

  • Average 2021–2026

    57.4 °F

  • Average High 2021–2026

    72.3 °F
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