Monthly weather forecast and climate
San Bruno, CA

What is the coldest month in San Bruno?

January is the coldest month in San Bruno, with an average high-temperature of 55.9°F (13.3°C) and an average low-temperature of 43°F (6.1°C).

How much does it rain in San Bruno?

Throughout the year, in San Bruno, 20.1" (510.9mm) of rain is accumulated.

What is the wettest month in San Bruno?

The month with the most rainfall is January when 4.4" (113mm) of precipitation is typically aggregated.

What is the driest month in San Bruno?

July is the month with the least rainfall in San Bruno, California, with 0" (0.8mm) of accumulated precipitation.

What is the warmest month in San Bruno?

The warmest month in San Bruno is September, with an average high-temperature of 72.7°F (22.6°C) and an average low-temperature of 55°F (12.8°C).
Average temperature - San Bruno, CA
Average rainfall - San Bruno, CA
Average daylight - San Bruno, CA

The month with the longest days is June (Average daylight: 14.7h).
The month with shortest days is December (Average daylight: 9.6h).

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