San Mateo Weather Forecast

    • 57
    • 87

    Partly Sunny

    • 58
    • 80

    Mostly Sunny

    • 58
    • 79

    Partly Sunny

    • 58
    • 78

    Partly Sunny

    • 58
    • 77

    Partly Sunny

    • 58
    • 77

    Partly Sunny

Today 21 Aug San Francisco Bay Shoreline

Partly cloudy. Highs in the upper 70s to mid 90s. Northwest Winds 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 21 Aug San Francisco Bay Shoreline

Mostly cloudy. Lows around 60. West Winds 10 to 20 Mph.

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San Mateo Temperature Statistics

August Temperature

San Francisco, San Francisco International Airport (4.3 miles)

  • Lowest 2 August, 2025

    56.6 °F

  • Average August

    63.4 °F

  • Highest 6 August, 2025

    81.6 °F

Climate (2020–Present)

San Francisco, San Francisco International Airport (4.3 miles)

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  • Average Low 2020–2025

    52.2 °F

  • Average 2020–2025

    58.3 °F

  • Average High 2020–2025

    66.6 °F
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