San Francisco Bay - Red Rock Island Weather Forecast

    • 58
    • 70

    Mostly Sunny

    • 58
    • 70

    Partly Sunny

    • 58
    • 68

    Mostly Sunny

    • 57
    • 64

    Partly Sunny

    • 57
    • 64

    Partly Sunny

    • 58
    • 63

    Mostly Sunny

Today 20 Aug San Francisco Bay Shoreline

Sunny. Highs in the mid 70s to upper 80s. Northwest Winds around 5 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 20 Aug San Francisco Bay Shoreline

Mostly clear in the evening then becoming partly cloudy. Lows in the lower 60s. West Winds 10 to 20 Mph.

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San Francisco Bay - Red Rock Island Temperature Statistics

August Temperature

Novato / Gnoss Field (16.2 miles)

  • Lowest 2 August, 2025

    48.2 °F

  • Average August

    65.2 °F

  • Highest 8 August, 2025

    96.8 °F

Climate (2020–Present)

Novato / Gnoss Field (16.2 miles)

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  • Average Low 2020–2025

    46 °F

  • Average 2020–2025

    57.5 °F

  • Average High 2020–2025

    72.5 °F
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