Downtown (South San Francisco) Weather Forecast

    • 51
    • 72

    Becoming Sunny

    • 50
    • 70

    Mostly Sunny

    • 53
    • 71

    Mostly Sunny

    • 53
    • 74

    Mostly Sunny

    • 51
    • 69

    Mostly Sunny

    • 52
    • 72

    Partly Sunny

Today 21 Mar San Francisco Bay Shoreline

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

Tonight 21 Mar San Francisco Bay Shoreline

Mostly clear. Lows around 50. West Winds 10 to 20 Mph.

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Downtown (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

    60.7 °F

  • Highest 16 March, 2026

    83.6 °F

Climate (2021–Present)

San Francisco, San Francisco International Airport (3.1 miles)

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  • Average Low 2021–2026

    52.4 °F

  • Average 2021–2026

    58.4 °F

  • Average High 2021–2026

    66.6 °F
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