San Bruno, California gets 26 inches of rain, on average, per year. The US average is 38 inches of rain per year.
San Bruno averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 262 sunny days per year in San Bruno. The US average is 205 sunny days.
San Bruno gets some kind of precipitation, on average, 69 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Summer High: the July high is around 70 degrees
Winter Low: the January low is 46
Rain: averages 26 inches of rain a year
Snow: averages 0 inches of snow a year
BESTPLACES COMFORT INDEX
The annual BestPlaces Comfort Index for San Bruno is 8.5 (10=best), which means it is more comfortable than most places in California.
9.4 / 7.6
Summer / Winter
September, August and July are the most pleasant months in San Bruno, while January and December are the least comfortable months.