San Bruno Weather Forecast

    • 57
    • 60

    Rain

    • 55
    • 59

    Rain

    • 53
    • 56

    Rain

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    • 57

    Rain

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    • 56

    Rain

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    Rain

Today 20 Dec San Francisco Bay Shoreline

Rain likely in the Morning, then rain in the afternoon. Highs in the lower 60s. Southeast Winds 5 to 10 Mph.

Tonight 20 Dec San Francisco Bay Shoreline

Rain. Lows in the mid 50s. South Winds 10 to 20 Mph.

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San Bruno Temperature Statistics

December Temperature

San Francisco, San Francisco International Airport (2.5 miles)

  • Lowest 15 December, 2025

    44.1 °F

  • Average December

    50.1 °F

  • Highest 3 December, 2025

    63 °F

Climate (2020–Present)

San Francisco, San Francisco International Airport (2.5 miles)

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  • Average Low 2020–2025

    52.3 °F

  • Average 2020–2025

    58.3 °F

  • Average High 2020–2025

    66.5 °F
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