San Francisco Bay - Sierra Point Marina Weather Forecast

    • 55
    • 66

    Increasing Clouds

    • 54
    • 63

    Partly Sunny

    • 57
    • 70

    Mostly Sunny

    • 58
    • 72

    Mostly Sunny

    • 59
    • 72

    Mostly Sunny

    • 58
    • 68

    Mostly Sunny

Today 26 Sep San Francisco Bay Shoreline

Partly cloudy in the morning then becoming sunny. Highs in the upper 60s to mid 70s. Southwest Winds 5 to 10 Mph becoming west 10 to 20 Mph in the afternoon.

Tonight 26 Sep San Francisco Bay Shoreline

Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 50s. West Winds 5 to 15 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 23 September, 2026

    55 °F

  • Average September

    66.8 °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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