San Mateo, CA weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in San Mateo now
Loading the National Weather Service forecast…
San Mateo weather by the hour
San Mateo weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of San Mateo.
This week in San Mateo
Sunrise, sunset and moon in San Mateo
What is the weather usually like in San Mateo?
Köppen climate classification, calculated from the 1991–2020 normals
- Septemberwarmest month · 75°F average high
- Januarycoldest month · 44°F average low
- 19.6 inprecipitation per year · 499 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit San Mateo: June to September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station SAN FRANCISCO INTL AP, CA US (USW00023234), adjusted for the elevation of San Mateo.
San Mateo weather month by month
Sunrise and sunset in San Mateo through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:21 AM | 5:16 PM | 9 h 55 min |
| February | 6:56 AM | 5:49 PM | 10 h 53 min |
| March | 7:18 AM | 7:17 PM | 11 h 59 min |
| April | 6:32 AM | 7:46 PM | 13 h 13 min |
| May | 5:58 AM | 8:13 PM | 14 h 15 min |
| June | 5:45 AM | 8:33 PM | 14 h 47 min |
| July | 5:58 AM | 8:31 PM | 14 h 32 min |
| August | 6:24 AM | 8:03 PM | 13 h 39 min |
| September | 6:50 AM | 7:18 PM | 12 h 28 min |
| October | 7:16 AM | 6:33 PM | 11 h 16 min |
| November | 6:47 AM | 4:59 PM | 10 h 11 min |
| December | 7:15 AM | 4:53 PM | 9 h 38 min |
Times for the 15th of each month, local time (America/Los Angeles).
What is the weather like in San Mateo?
San Mateo has a warm-summer mediterranean climate. The warmest month is September, with an average high of 75°F (24°C), and the coldest is January, with average lows of 44°F (7°C).
It gets about 19.6 inches (499 mm) of precipitation a year. The wettest month is December and the driest is July.
The best time to visit San Mateo is June to September. At 39 ft of elevation, nights are mild most of the year. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
More about San Mateo
Weather in towns near San Mateo
Questions about the weather in San Mateo
What is the hottest month in San Mateo?
September, with an average high of 75°F (24°C).
What is the coldest month in San Mateo?
January, with an average low of 44°F (7°C).
How much does it rain in San Mateo?
About 19.6 inches (499 mm) a year; the wettest month is December.
Does it snow in San Mateo?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit San Mateo?
June to September, when temperatures are most pleasant and rainy days are fewer.
What climate does San Mateo have?
Warm-summer mediterranean (Köppen Csb).
What is the weather like in San Mateo in November?
Highs average 64°F and lows 48°F, with about 2.0 inches of precipitation.
What time is sunrise in San Mateo?
Around 6:47 AM in mid-November, and sunset around 4:59 PM. Today’s exact times are shown above.
Where does this San Mateo weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of San Mateo.
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