Climate almanac
San Mateo
California, US · 37.56°, -122.33°
What is the climate like in San Mateo?
San Mateo is warmest in September, when daily highs average 76°F (24°C), and coolest in December, when lows fall to about 47°F (8°C). The wettest month is typically January and the driest is July; the year sees roughly 21 in of precipitation.
- Warmest monthSeptember — average high 76°F (24°C)
- Coolest monthDecember — average low 47°F (8°C)
- Wettest monthJanuary (4.5 in)
- Driest monthJuly (0.0 in)
- Annual precipitation21 in