Downtown (San Mateo) Weather Forecast

    • 56
    • 79

    Sunny

    • 55
    • 77

    Mostly Sunny

    • 56
    • 81

    Mostly Sunny

    • 56
    • 78

    Mostly Sunny

    • 54
    • 72

    Partly Sunny

    • 56
    • 73

    Partly Sunny

Today 18 Oct San Francisco Bay Shoreline

Sunny. Highs in the mid 70s to lower 80s. Northeast Winds around 5 Mph. Becoming northwest in the afternoon.

Tonight 18 Oct San Francisco Bay Shoreline

Mostly clear. Lows in the upper 50s. Northwest Winds 5 to 10 Mph.

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Downtown (San Mateo) Temperature Statistics

October Temperature

San Francisco, San Francisco International Airport (4.3 miles)

  • Lowest 14 October, 2025

    50 °F

  • Average October

    62.4 °F

  • Highest 6 October, 2025

    82.9 °F

Climate (2020–Present)

San Francisco, San Francisco International Airport (4.3 miles)

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  • Average Low 2020–2025

    52.3 °F

  • Average 2020–2025

    58.3 °F

  • Average High 2020–2025

    66.6 °F
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