San Bruno Weather Forecast

    • 57
    • 67

    Increasing Clouds

    • 57
    • 65

    Partly Sunny

    • 56
    • 62

    Partly Sunny

    • 57
    • 67

    Sunny

    • 59
    • 73

    Sunny

    • 59
    • 73

    Mostly Sunny

    • 58
    • 69

    Mostly Sunny

Today 25 Sep San Francisco Bay Shoreline

Partly cloudy late in the morning then becoming sunny. Breezy. Highs in the 70s. West Winds 5 to 15 Mph increasing to 20 to 30 Mph in the afternoon.

Tonight 25 Sep San Francisco Bay Shoreline

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 50s. West Winds 10 to 20 Mph. Becoming southwest 5 to 10 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Bruno Temperature Statistics

September Temperature

San Francisco, San Francisco International Airport (2.5 miles)

  • Lowest 23 September, 2026

    55 °F

  • Average September

    66.8 °F

  • Highest 9 September, 2026

    94.6 °F

Climate (2021–2026)

San Francisco, San Francisco International Airport (2.5 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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