San Francisco Bay - Sierra Point Marina Weather Forecast

    • 60
    • 78

    Partly Sunny

    • 55
    • 70

    Decreasing Clouds

    • 55
    • 69

    Partly Sunny

    • 55
    • 64

    Mostly Sunny

    • 56
    • 67

    Mostly Sunny

    • 58
    • 71

    Mostly Sunny

    • 58
    • 73

    Mostly Sunny

Today 24 Sep San Francisco Bay Shoreline

Partly cloudy in the morning then becoming sunny. Highs in the 70s to lower 80s.

Tonight 24 Sep San Francisco Bay Shoreline

Mostly cloudy in the evening then becoming partly cloudy. Lows around 60. 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

    66.9 °F

  • Highest 9 September, 2026

    94.6 °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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