South San Francisco Weather Forecast

    • 51
    • 71

    Becoming Sunny

    • 51
    • 69

    Mostly Sunny

    • 52
    • 69

    Mostly Sunny

    • 52
    • 72

    Mostly Sunny

    • 51
    • 70

    Partly Sunny

    • 51
    • 70

    Mostly Sunny

Today 21 Mar San Francisco Bay Shoreline

Partly cloudy. Highs in the 70s. West Winds around 5 Mph increasing to northwest 10 to 20 Mph in the afternoon.

Tonight 21 Mar San Francisco Bay Shoreline

Mostly clear. Lows in the lower 50s. West Winds 10 to 20 Mph. Becoming 5 to 10 Mph after midnight.

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South San Francisco Temperature Statistics

March Temperature

San Francisco, San Francisco International Airport (3.1 miles)

  • Lowest 5 March, 2026

    46.7 °F

  • Average March

    61.5 °F

  • Highest 17 March, 2026

    85.6 °F

Climate (2021–Present)

San Francisco, San Francisco International Airport (3.1 miles)

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  • Average Low 2021–2026

    52.5 °F

  • Average 2021–2026

    58.4 °F

  • Average High 2021–2026

    66.6 °F
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