San Francisco Bay - Red Rock Island Weather Forecast

    • 48
    • 54

    Increasing Clouds

    • 49
    • 56

    Partly Sunny

    • 49
    • 55

    Partly Sunny

    • 51
    • 57

    Partly Sunny

    • 51
    • 59

    Partly Sunny

    • 50
    • 59

    Partly Sunny

Today 6 Dec San Francisco Bay Shoreline

Partly cloudy in the morning then becoming sunny. Highs in the lower 60s. Northwest Winds 5 to 10 Mph.

Tonight 6 Dec San Francisco Bay Shoreline

Mostly clear. Lows in the 40s. North Winds around 5 Mph.

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San Francisco Bay - Red Rock Island Temperature Statistics

December Temperature

Novato / Gnoss Field (16.2 miles)

  • Lowest 2 December, 2025

    37.4 °F

  • Average December

    48.7 °F

  • Highest 3 December, 2025

    71.6 °F

Climate (2020–Present)

Novato / Gnoss Field (16.2 miles)

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  • Average Low 2020–2025

    46.1 °F

  • Average 2020–2025

    57.4 °F

  • Average High 2020–2025

    72.3 °F
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