San Mateo

Current Weather

24°75°

Mostly Clear

Feels Like: 22°72°

Min: 24°75°

Max: 31°88°

The next few hours will be mostly clear, with today reaching 31°C and dropping to 22°C. The coming days will be possible thunderstorms from afternoon until night.

Hourly Forecast
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Air Quality
14
Good

Air quality is satisfactory, and air pollution poses little or no risk.

GoodHazardous
Daylight Hours

06:58

Sunrise

18:34

Sunset

11 hours 35 minutes of sunlight today
Moon

07:41

Moonrise

19:12

Moonset

Daily Forecast

Today

24°75°
31°88°

Monday

22°72°
33°91°

Tuesday

21°70°
30°86°

Wednesday

21°70°
29°84°

Thursday

21°71°
29°85°

Friday

22°72°
28°82°

Saturday

23°73°
27°80°

Sunday

23°73°
26°78°

Monday

22°71°
27°80°

Tuesday

23°73°
29°84°
UV Index
No protection needed
0Low
LowExtreme
Humidity
94%Very Humid
LowHigh
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Weather in San Mateo today, October 11, 2026

San Mateo starts October 11, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans. Expect a brighter morning, with limited cloud around 34% by 11:00. Conditions start on a settled note.San Mateo starts October 11, 2026 looking damp, with rain in the forecast and wetter spells likely at times. Waterproof kit is the safer call for early plans. Expect a brighter morning, with limited cloud around 34% by 11:00. Conditions start on a settled note.

The temperature range runs from about 24°C up to 31°C. The air stays humid, with relative humidity between 62% and 94% and the peak around 04:00. Winds stay light, near 16 km/h by 14:00, so the day feels still more than breezy.The temperature range runs from about 75°F up to 88°F. The air stays humid, with relative humidity between 62% and 94% and the peak around 04:00. Winds stay light, near 10 mph by 14:00, so the day feels still more than breezy.

Through the afternoon wet weather remains a factor, with rain chances near 62% around 12:00. Cloud also stays substantial, close to 47% near 14:00. Horizontal visibility holds close to 16.1 km. Sunrise is at 06:58 and sunset at 18:34, giving 11 hours 35 minutes of sunlight today.Through the afternoon wet weather remains a factor, with rain chances near 62% around 12:00. Cloud also stays substantial, close to 47% near 14:00. Horizontal visibility holds close to 10 mi. Sunrise is at 06:58 and sunset at 18:34, giving 11 hours 35 minutes of sunlight today.

Taken together, San Mateo looks wet enough on October 11, 2026 that flexible outdoor plans work best, with temperatures peaking near 31°C.Taken together, San Mateo looks wet enough on October 11, 2026 that flexible outdoor plans work best, with temperatures peaking near 88°F.

Frequently asked questions about weather in San Mateo

How warm does it get in San Mateo?

The warmest month in San Mateo is August, with average high temperatures of 31°C. The average temperature during this period is around 27°C.The warmest month in San Mateo is August, with average high temperatures of 87°F. The average temperature during this period is around 81°F.

How cold does it get in San Mateo?

The coldest month in San Mateo is January, with average low temperatures of 20°C. The average temperature during this period is around 23°C.The coldest month in San Mateo is January, with average low temperatures of 69°F. The average temperature during this period is around 74°F.

What is the wettest time of year in San Mateo?

The wettest month in San Mateo is May, with an average of 208 mm of precipitation.The wettest month in San Mateo is May, with an average of 8.2 in of precipitation.

What is the driest time of year in San Mateo?

The driest month in San Mateo is February, with an average of 32 mm of precipitation.The driest month in San Mateo is February, with an average of 1.3 in of precipitation.

View full climate insights for San Mateo →