San Mateo

Current Weather

25°77°

Humid and Overcast

Feels Like: 24°76°

Min: 24°74°

Max: 29°84°

The next few hours will be humid and overcast, with tomorrow reaching 27°C and dropping to 23°C. The coming days will be light rain throughout the day.

Hourly Forecast
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Air Quality
13
Good

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

GoodHazardous
Daylight Hours

05:29

Sunrise

17:18

Sunset

11 hours 48 minutes of sunlight today
Moon

06:07

Moonrise

Daily Forecast

Sunday

24°74°
29°84°

Today

23°74°
28°82°

Tuesday

23°73°
29°84°

Wednesday

23°73°
29°85°

Thursday

22°72°
29°83°

Friday

23°74°
29°83°

Saturday

23°73°
29°84°

Sunday

23°73°
27°81°

Monday

22°72°
26°79°

Tuesday

23°74°
27°80°
UV Index
No protection needed
0Low
LowExtreme
Humidity
98%Very Humid
LowHigh
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Weather in San Mateo tomorrow, October 12, 2026

Rain features in San Mateo on October 12, 2026, so keep waterproofs handy through the day. The damp theme is strongest where shower chances rise. Early hours look the most unsettled, with rain probability near 100% by 10:00. The thickest cloud arrives around 00:00, reaching about 95%.Rain features in San Mateo on October 12, 2026, so keep waterproofs handy through the day. The damp theme is strongest where shower chances rise. Early hours look the most unsettled, with rain probability near 100% by 10:00. The thickest cloud arrives around 00:00, reaching about 95%.

The temperature range runs from about 23°C up to 28°C. The air stays humid, with relative humidity between 86% and 99% and the peak around 00:00. A lighter breeze peaks around 12:00 near 8 km/h.The temperature range runs from about 74°F up to 82°F. The air stays humid, with relative humidity between 86% and 99% and the peak around 00:00. A lighter breeze peaks around 12:00 near 5 mph.

Afternoon showers stay in play, peaking near 100% around 12:00. Skies remain cluttered, with cover about 97% by 17:00. Visibility holds near 13.4 km, though it can fall to 5 km. The sun rises at 05:29 and sets at 17:17, for a total of 11 hours 48 minutes of sunlight today.Afternoon showers stay in play, peaking near 100% around 12:00. Skies remain cluttered, with cover about 97% by 17:00. Visibility holds near 8.3 mi, though it can fall to 3.1 mi. The sun rises at 05:29 and sets at 17:17, for a total of 11 hours 48 minutes of sunlight today.

Taken together, San Mateo looks wet enough on October 12, 2026 that flexible outdoor plans work best, with temperatures peaking near 28°C.Taken together, San Mateo looks wet enough on October 12, 2026 that flexible outdoor plans work best, with temperatures peaking near 82°F.

Frequently asked questions about weather in San Mateo

How warm does it get in San Mateo?

The warmest month in San Mateo is March, with average high temperatures of 30°C. The average temperature during this period is around 25°C.The warmest month in San Mateo is March, with average high temperatures of 85°F. The average temperature during this period is around 76°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 24°C.The coldest month in San Mateo is January, with average low temperatures of 68°F. The average temperature during this period is around 75°F.

What is the wettest time of year in San Mateo?

The wettest month in San Mateo is October, with an average of 562 mm of precipitation.The wettest month in San Mateo is October, with an average of 22.1 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 14 mm of precipitation.The driest month in San Mateo is February, with an average of 0.6 in of precipitation.

View full climate insights for San Mateo →