South Basin Weather Forecast

    • 57
    • 70

    Increasing Clouds

    • 56
    • 69

    Increasing Clouds

    • 60
    • 78

    Mostly Sunny

    • 61
    • 79

    Slight Chance Rain

    • 65
    • 79

    Partly Sunny

    • 62
    • 76

    Partly Sunny

    • 60
    • 70

    Partly Sunny

Today 5 Sep San Francisco

Partly cloudy. Highs in the 60s to lower 70s. West Winds 10 to 20 Mph.

Tonight 5 Sep San Francisco

Partly cloudy late in the evening then becoming mostly cloudy. Lows in the upper 50s. West Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

South Basin Temperature Statistics

September Temperature

San Francisco, San Francisco International Airport (7.5 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 (7.5 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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