San Francisco Bay - Sierra Point Marina Weather Forecast

    • 60
    • 80

    Increasing Clouds

    • 58
    • 74

    Decreasing Clouds

    • 58
    • 70

    Breezy

    • 57
    • 73

    Mostly Sunny

    • 58
    • 69

    Mostly Sunny

    • 59
    • 66

    Partly Sunny

    • 58
    • 67

    Partly Sunny

Today 10 Sep San Francisco Bay Shoreline

Partly cloudy. Highs in the 70s to upper 80s. West Winds 10 to 20 Mph.

Tonight 10 Sep San Francisco Bay Shoreline

Mostly clear in the evening then becoming partly cloudy. Lows in the lower 60s. West Winds 5 to 15 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

    67.6 °F

  • Highest 8 September, 2026

    86 °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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