Weather WorldSan Mateo County, CA 7-Day Night Weather Forecast
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San Mateo County, CA Weather Forecast
San Mateo County, CA Weather Forecast Date: 902 PM PDT Thu Sep 03 2026
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Rest of Tonight... Mostly cloudy. A slight chance of rain late in the evening. Lows in the upper 50s. West winds 5 to 10 mph.
Friday... Mostly cloudy in the morning then becoming sunny. Highs in the upper 60s to mid 70s. West winds 5 to 10 mph increasing to 10 to 20 mph in the afternoon.
Friday Night... Mostly clear in the evening then becoming mostly cloudy. Lows in the upper 50s. West winds 10 to 20 mph...Becoming 5 to 10 mph after midnight.
Saturday... Mostly cloudy in the morning then becoming sunny. Highs in the upper 60s to mid 70s. West winds up to 5 mph increasing to 5 to 15 mph in the afternoon.
Saturday Night... Clear in the evening then becoming partly cloudy. Lows in the upper 50s. West winds 10 to 20 mph...Becoming 5 to 10 mph after midnight.
Sunday... Mostly cloudy in the morning then becoming sunny. Highs in the upper 60s to mid 70s.
Sunday Night... Mostly clear. Lows in the upper 50s.
Labor Day... Partly cloudy in the morning then becoming sunny. Highs in the 70s to lower 80s.
Monday Night... Mostly clear. Lows in the upper 50s.
Tuesday... Partly cloudy. Highs in the 70s to lower 80s. Lows in the lower 60s.
Tuesday Night... Partly cloudy. Highs in the 70s to lower 80s. Lows in the lower 60s.
Wednesday... Mostly cloudy. Highs in the 70s to lower 80s.
Wednesday Night... Partly cloudy. A slight chance of rain. Lows in the lower 60s. Highs in the 70s to lower 80s.
POP = Probability of Precipitation
San Mateo County Radar Loop
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