2025 Compare Climate & Weather:
San Bruno, CA vs Suisun City, CA

Highlights

On average, there are 264 sunny days per year in Suisun City. San Bruno averages 262 sunny days per year. The US average is 205 sunny days.

Suisun City, California gets 25 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.

Suisun City 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

Suisun City, California
Summer High: the July high is around 92.4 degrees
Winter Low: the January low is 38.8
Rain: averages 25 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 Suisun City is 8.2 (10=best), which means it is about average compared to other 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

63°F

Today's Weather - Suisun City, CA

71°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: San Bruno / Suisun City

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.

July is the hottest month for Suisun City with an average high temperature of 92.4°, which ranks it as about average compared to other places in California. In Suisun City, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Suisun City are October, May and April.

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 Suisun City with an average of 38.7°. 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 Suisun City, there are 71.7 days annually when the high temperature is over 90°, which is hotter 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 Suisun City, there are 11.4 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 Suisun City, 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.


December is the wettest month in Suisun City with 5.0 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 60% of yearly precipitation and 0% occurs in Autumn, which is the driest season. The annual rainfall of 25.0 inches in Suisun City means that it is wetter 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.

January is the rainiest month in Suisun City with 11.5 days of rain, and July is the driest month with only 0.0 rainy days. There are 64.2 rainy days annually in Suisun City, which is rainier than most places in California. The rainiest season is Spring when it rains 51% 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 Suisun City, 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 Suisun City.