Millbrae Weather Forecast

    • 59
    • 77

    Partly Sunny

    • 53
    • 70

    Partly Sunny

    • 54
    • 68

    Partly Sunny

    • 52
    • 65

    Partly Sunny

    • 55
    • 74

    Sunny

    • 57
    • 78

    Mostly Sunny

Today 24 Sep San Francisco Bay Shoreline

Partly cloudy. Highs in the upper 70s to mid 80s. West Winds up to 5 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 24 Sep San Francisco Bay Shoreline

Partly cloudy in the evening then becoming mostly cloudy. Lows around 60. West Winds 10 to 20 Mph.

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Millbrae Temperature Statistics

September Temperature

San Francisco, San Francisco International Airport (1.9 miles)

  • Lowest 7 September, 2026

    56.6 °F

  • Average September

    67.1 °F

  • Highest 9 September, 2026

    94.6 °F

Climate (2021–2026)

San Francisco, San Francisco International Airport (1.9 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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