San Mateo Weather Forecast

    • 55
    • 70

    Mostly Cloudy

    • 55
    • 71

    Partly Sunny

    • 57
    • 72

    Mostly Cloudy

    • 55
    • 71

    Chance Rain

    • 54
    • 70

    Slight Chance Rain

    • 54
    • 71

    Mostly Sunny

Today 22 Oct San Francisco Bay Shoreline

Mostly cloudy in the morning then becoming partly cloudy. Highs in the upper 60s. West Winds 5 to 15 Mph.

Tonight 22 Oct San Francisco Bay Shoreline

Partly cloudy in the evening then becoming mostly cloudy. Lows in the mid 50s. West Winds 5 to 15 Mph.

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San Mateo Temperature Statistics

October Temperature

San Francisco, San Francisco International Airport (4.3 miles)

  • Lowest 14 October, 2025

    50 °F

  • Average October

    62.3 °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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