San Mateo

Current Weather

24°75°

Drizzle

Feels Like: 25°77°

Min: 20°68°

Max: 27°81°

The next few hours will be humid and overcast, with today reaching 27°C and dropping to 20°C. The coming days will be drizzle

Hourly Forecast
24°74°25°77°26°79°27°81°26°79°25°77°24°75°23°73°22°72°21°70°21°70°21°69°20°69°20°69°20°69°20°68°20°68°20°68°20°67°20°67°20°67°20°67°21°70°22°72°
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6%
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Air Quality
13
Good

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

GoodHazardous
Daylight Hours

05:36

Sunrise

17:19

Sunset

11 hours 43 minutes of sunlight today
Moon

07:08

Moonrise

18:04

Moonset

Daily Forecast

Today

20°68°
27°81°

Tuesday

20°67°
27°81°

Wednesday

20°67°
27°81°

Thursday

20°68°
27°81°

Friday

20°69°
27°80°

Saturday

20°68°
24°75°

Sunday

20°67°
26°80°

Monday

19°67°
26°80°

Tuesday

20°67°
27°80°

Wednesday

19°67°
27°81°
UV Index
Wear sunscreen
5Moderate
LowExtreme
Humidity
87%Humid
LowHigh
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Weather in San Mateo today, 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. Wetter spells lean into the morning, when rain odds reach about 90% near 10:00. Skies look heaviest around 09:00, with cover close to 86%.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. Wetter spells lean into the morning, when rain odds reach about 90% near 10:00. Skies look heaviest around 09:00, with cover close to 86%.

The day peaks near 27°C and cools toward 20°C. Relative humidity sits between 67% and 99%, reaching its peak around 18:00. Airflow remains manageable, reaching about 15 km/h around 15:00.The day peaks near 81°F and cools toward 68°F. Relative humidity sits between 67% and 99%, reaching its peak around 18:00. Airflow remains manageable, reaching about 10 mph around 15:00.

The second half of the day still looks unsettled, with rain probability around 100% by 16:00. Dense cloud near 89% at 23:00 keeps the feel grey. Views remain open at about 16.1 km. The sun rises at 05:36 and sets at 17:19, for a total of 11 hours 43 minutes of sunlight today.The second half of the day still looks unsettled, with rain probability around 100% by 16:00. Dense cloud near 89% at 23:00 keeps the feel grey. Views remain open at about 10 mi. The sun rises at 05:36 and sets at 17:19, for a total of 11 hours 43 minutes of sunlight today.

In short, treat October 12, 2026 in San Mateo as a damp day: pack covers, watch the wetter hours, and expect a high near 27°C.In short, treat October 12, 2026 in San Mateo as a damp day: pack covers, watch the wetter hours, and expect a high near 81°F.

Frequently asked questions about weather in San Mateo

How warm does it get in San Mateo?

The warmest month in San Mateo is May, with average high temperatures of 30°C. The average temperature during this period is around 25°C.The warmest month in San Mateo is May, with average high temperatures of 86°F. The average temperature during this period is around 77°F.

How cold does it get in San Mateo?

The coldest month in San Mateo is February, with average low temperatures of 18°C. The average temperature during this period is around 22°C.The coldest month in San Mateo is February, with average low temperatures of 65°F. The average temperature during this period is around 72°F.

What is the wettest time of year in San Mateo?

The wettest month in San Mateo is June, with an average of 311 mm of precipitation.The wettest month in San Mateo is June, with an average of 12.2 in of precipitation.

What is the driest time of year in San Mateo?

The driest month in San Mateo is March, with an average of 62 mm of precipitation.The driest month in San Mateo is March, with an average of 2.5 in of precipitation.

View full climate insights for San Mateo →