San Francisco Bay - Sierra Point Marina Weather Forecast

    • 57
    • 71

    Breezy

    • 56
    • 70

    Mostly Sunny

    • 57
    • 76

    Mostly Sunny

    • 57
    • 75

    Partly Sunny

    • 57
    • 75

    Partly Sunny

    • 58
    • 77

    Partly Sunny

    • 58
    • 75

    Partly Sunny

Today 12 Sep San Francisco Bay Shoreline

Sunny, breezy. Highs in the 70s. West Winds 20 to 30 Mph.

Tonight 12 Sep San Francisco Bay Shoreline

Mostly clear. Breezy. Lows in the upper 50s. West Winds 20 to 30 Mph.

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  • Temperature Real-Time

San Francisco Bay - Sierra Point Marina Temperature Statistics

September Temperature

San Francisco, San Francisco International Airport (3.7 miles)

  • Lowest 7 September, 2026

    56.6 °F

  • Average September

    69.4 °F

  • Highest 9 September, 2026

    93 °F

Climate (2021–2026)

San Francisco, San Francisco International Airport (3.7 miles)

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  • Average Low 2021–2026

    52.5 °F

  • Average 2021–2026

    58.7 °F

  • Average High 2021–2026

    66.8 °F
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