San Francisco Bay - Fort Mason Weather Forecast

    • 57
    • 61

    Partly Sunny

    • 56
    • 61

    Partly Sunny

    • 59
    • 66

    Partly Sunny

    • 59
    • 66

    Mostly Cloudy

    • 62
    • 66

    Slight Chance Rain

    • 60
    • 67

    Partly Sunny

Today 5 Sep San Francisco

Mostly cloudy in the morning then becoming sunny. Highs in the 60s. West Winds 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 5 Sep San Francisco

Partly cloudy in the evening then becoming mostly cloudy. Lows in the upper 50s. West Winds 10 to 20 Mph.

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San Francisco Bay - Fort Mason Temperature Statistics

September Temperature

Oakland, Metro Oakland International Airport (12.4 miles)

  • Lowest 2 September, 2026

    59 °F

  • Average September

    66.5 °F

  • Highest 1 September, 2026

    72.6 °F

Climate (2021–2026)

Oakland, Metro Oakland International Airport (12.4 miles)

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  • Average Low 2021–2026

    51.1 °F

  • Average 2021–2026

    58.9 °F

  • Average High 2021–2026

    67.2 °F
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