2025 Compare Climate & Weather:
San Bruno, CA vs Mountain View, CA

Highlights

On average, there are 256 sunny days per year in Mountain View. San Bruno averages 262 sunny days per year. The US average is 205 sunny days.

Mountain View, California gets 15.5 inches of rain, on average, per year. San Bruno, California gets 25.5 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Mountain View averages 0 inches of snow per year. San Bruno averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Mountain View, California
Summer High: the July high is around 79.3 degrees
Winter Low: the January low is 41.1
Rain: averages 15.5 inches of rain a year
Snow: averages 0 inches of snow a year

San Bruno, California
Summer High: the July high is around 69.8 degrees
Winter Low: the January low is 45.9
Rain: averages 25.5 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Mountain View is 8.8 (10=best), which means it is more comfortable than most places in California.

The annual BestPlaces Comfort Index for San Bruno is 8.5 (10=best), which means it is more comfortable than most places in California.

Today's Weather - San Bruno, CA

60°F

Today's Weather - Mountain View, CA

67°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: San Bruno / Mountain View

September is the hottest month for San Bruno with an average high temperature of 72.1°, which ranks it as one of the coolest places in California. In San Bruno, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for San Bruno are September, August and July.

August is the hottest month for Mountain View with an average high temperature of 79.3°, which ranks it as cooler than most places in California. In Mountain View, there are 6 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Mountain View are June, September and July.

January has the coldest nighttime temperatures for San Bruno with an average of 45.9°. This is one of the warmest places in California.

December has the coldest nighttime temperatures for Mountain View with an average of 40.9°. This is warmer than most places in California.

In San Bruno, there are 2.6 days annually when the high temperature is over 90°, which is one of the coolest places in California.

In Mountain View, there are 11.7 days annually when the high temperature is over 90°, which is cooler than most places in California.

In San Bruno, there are 0.3 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in California.

In Mountain View, there are 5.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In San Bruno, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.

In Mountain View, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in California.

January is the wettest month in San Bruno with 5.0 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 58% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 25.5 inches in San Bruno means that it is wetter than most places in California.


February is the wettest month in Mountain View with 3.1 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 57% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 15.5 inches in Mountain View means that it is drier than most places in California.

January is the rainiest month in San Bruno with 11.2 days of rain, and July is the driest month with only 0.3 rainy days. There are 69.1 rainy days annually in San Bruno, which is rainier than most places in California. The rainiest season is Spring when it rains 48% of the time and the driest is Autumn with only a 4% chance of a rainy day.

February is the rainiest month in Mountain View with 10.4 days of rain, and July is the driest month with only 0.2 rainy days. There are 61.6 rainy days annually in Mountain View, which is rainier than most places in California. The rainiest season is Spring when it rains 50% of the time and the driest is Autumn with only a 2% chance of a rainy day.

There is rarely any recorded snowfall in San Bruno, ranking it as one of the least snowy places in California.

There is rarely any recorded snowfall in Mountain View, ranking it as one of the least snowy places in California.

Any measurable snowfall is a rare occurance in San Bruno.

Any measurable snowfall is a rare occurance in Mountain View.