San Mateo Weather Forecast

    • 53
    • 77

    Decreasing Clouds

    • 53
    • 73

    Partly Sunny

    • 52
    • 69

    Partly Sunny

    • 52
    • 71

    Mostly Sunny

    • 52
    • 73

    Mostly Sunny

    • 52
    • 75

    Mostly Sunny

Today 11 May San Francisco Bay Shoreline

Mostly cloudy in the morning then becoming sunny. Highs in the 70s to mid 80s. Southwest Winds up to 5 Mph. Becoming northwest in the afternoon.

Tonight 11 May San Francisco Bay Shoreline

Mostly clear in the evening then becoming partly cloudy. Lows in the mid 50s. West Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

San Mateo Temperature Statistics

May Temperature

San Francisco, San Francisco International Airport (4.3 miles)

  • Lowest 8 May, 2026

    53.1 °F

  • Average May

    58.8 °F

  • Highest 6 May, 2026

    67.6 °F

Climate (2021–Present)

San Francisco, San Francisco International Airport (4.3 miles)

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  • Average Low 2021–2026

    52.5 °F

  • Average 2021–2026

    58.6 °F

  • Average High 2021–2026

    66.7 °F
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