San Francisco Bay - Castro Point Weather Forecast

    • 57
    • 62

    Increasing Clouds

    • 58
    • 63

    Partly Sunny

    • 60
    • 68

    Mostly Sunny

    • 60
    • 66

    Partly Sunny

    • 58
    • 64

    Mostly Sunny

    • 59
    • 65

    Mostly Sunny

Today 13 Aug San Francisco Bay Shoreline

Mostly cloudy in the morning then becoming sunny. Highs in the 70s. West Winds 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 13 Aug San Francisco Bay Shoreline

Mostly cloudy. Lows around 60. West Winds 5 to 10 Mph.

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San Francisco Bay - Castro Point Temperature Statistics

August Temperature

Novato / Gnoss Field (16.2 miles)

  • Lowest 2 August, 2025

    48.2 °F

  • Average August

    64.6 °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

    72.6 °F
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