San Francisco International Airport Weather Forecast

    • 59
    • 76

    Mostly Sunny

    • 59
    • 73

    Partly Sunny

    • 58
    • 73

    Partly Sunny

    • 59
    • 72

    Mostly Cloudy

    • 59
    • 70

    Mostly Cloudy

    • 59
    • 71

    Partly Sunny

Today 1 Sep San Francisco Bay Shoreline

Sunny. Highs in the mid 70s to upper 80s. Northwest Winds 5 to 10 Mph. Becoming west 10 to 20 Mph in the afternoon.

Tonight 1 Sep San Francisco Bay Shoreline

Mostly clear. Lows in the lower 60s. West Winds 10 to 20 Mph. Becoming 5 to 10 Mph after midnight.

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San Francisco International Airport Temperature Statistics

September Temperature

San Francisco, San Francisco International Airport (0 miles)

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  • Average September

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Climate (2020–Present)

San Francisco, San Francisco International Airport (0 miles)

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  • Average Low 2020–2025

    52.2 °F

  • Average 2020–2025

    58.3 °F

  • Average High 2020–2025

    66.6 °F
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