San Mateo, CA Weather Forecast
San Mateo County, California
Live radar, warnings and storm tracking for San Mateo, with free alerts the moment it counts.
The next few hours
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
Free alerts for San Mateo
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
San Mateo, CA at a glance
San Mateo is home to about 101,327 people in San Mateo County, across 12 square miles. It ranks 72nd by population of 450 places in California with a forecast here. The nearest neighbour with its own forecast is Hillsborough, 3 miles away.
- County
- San Mateo County
- Population
- 101,327 2023 est.
- Land area
- 12 sq mi
- People per sq mi
- 8,351
- Forecast point
- 37.5603°N, 122.3106°W
How well can the network see San Mateo?
The nearest Doppler radar is KMUX (San Francisco, CA), to the SE. Its lowest scan passes about 2,300 ft above San Mateo. Close enough to see rotation in the low part of a storm, where tornadoes form. San Mateo is closer to its radar than 62% of US cities.
The closest weather station is KSQL (San Carlos Arpt). Close enough that its readings are the conditions in town.
Forecasts near San Mateo
- Hillsborough, CA3 mi
- Foster City, CA3 mi
- Belmont, CA3 mi
- Burlingame, CA4 mi
- San Carlos, CA5 mi
- Millbrae, CA6 mi
- Redwood City, CA6 mi
- South San Francisco, CA7 mi
Elsewhere in California
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