San Francisco Bay - Sierra Point Marina Weather Forecast

    • 57
    • 70

    Increasing Clouds

    • 56
    • 70

    Partly Sunny

    • 59
    • 78

    Mostly Sunny

    • 62
    • 80

    Slight Chance Rain

    • 66
    • 78

    Partly Sunny

    • 63
    • 75

    Partly Sunny

    • 61
    • 69

    Partly Sunny

Today 5 Sep San Francisco Bay Shoreline

Sunny. Highs in the lower to mid 70s. Northwest Winds 5 to 10 Mph. Becoming west 10 to 20 Mph in the afternoon.

Tonight 5 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. Becoming 5 to 10 Mph after midnight.

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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 3 September, 2026

    60.1 °F

  • Average September

    66.6 °F

  • Highest 2 September, 2026

    73.7 °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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