San Francisco Bay - Sierra Point Marina Weather Forecast

    • 57
    • 71

    Chance Rain

    • 56
    • 68

    Mostly Sunny

    • 56
    • 70

    Mostly Sunny

    • 57
    • 70

    Mostly Sunny

    • 59
    • 70

    Mostly Sunny

    • 60
    • 70

    Partly Sunny

Today 3 Sep San Francisco Bay Shoreline

Partly cloudy. A slight chance of rain in the afternoon. Highs in the lower to mid 70s. South Winds 10 to 15 Mph becoming southwest 10 to 20 Mph in the afternoon.

Tonight 3 Sep San Francisco Bay Shoreline

Mostly cloudy in the evening then becoming partly cloudy. A slight chance of rain in the evening. Lows in the upper 50s. West Winds 5 to 15 Mph.

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San Francisco Bay - Sierra Point Marina Temperature Statistics

September Temperature

San Francisco, San Francisco International Airport (3.7 miles)

  • Lowest 1 September, 2026

    62.1 °F

  • Average September

    65 °F

  • Highest 1 September, 2026

    71.1 °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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