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  1. San Mateo, CA

    Mostly clear, 5:55 AM

    Mostly clear icon
    13
    • Precipitation: 5%
    • Humidity: 88%
    • Wind: 3 kph
    • 1823262318161414

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  1. 2 days ago · San Mateo Weather Forecasts. Weather Underground provides local & long-range weather forecasts, weatherreports, maps & tropical weather conditions for the San Mateo area.