San Francisco Bay - Sierra Point Marina Weather Forecast

    • 58
    • 73

    Mostly Sunny

    • 58
    • 71

    Breezy

    • 57
    • 72

    Mostly Sunny

    • 58
    • 75

    Mostly Sunny

    • 58
    • 67

    Partly Sunny

    • 58
    • 68

    Partly Sunny

    • 58
    • 68

    Partly Sunny

Today 11 Sep San Francisco Bay Shoreline

Sunny. Highs in the 70s to lower 80s. West Winds 10 to 20 Mph.

Tonight 11 Sep San Francisco Bay Shoreline

Mostly clear in the evening then becoming partly cloudy. Lows in the upper 50s. West Winds 10 to 20 Mph.

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  • Temperature Forecast NOAA

  • 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

    69.1 °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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