2025 Compare Climate & Weather:
Fairfield, CA vs Rohnert Park, CA

Highlights

On average, there are 255 sunny days per year in Rohnert Park. Fairfield averages 258 sunny days per year. The US average is 205 sunny days.

Rohnert Park, California gets 31.6 inches of rain, on average, per year. Fairfield, California gets 24.8 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Rohnert Park averages 0 inches of snow per year. Fairfield averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Rohnert Park, California
Summer High: the July high is around 82.4 degrees
Winter Low: the January low is 38.4
Rain: averages 31.6 inches of rain a year
Snow: averages 0 inches of snow a year

Fairfield, California
Summer High: the July high is around 89.8 degrees
Winter Low: the January low is 38.7
Rain: averages 24.8 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Rohnert Park is 8.4 (10=best), which means it is more comfortable than most places in California.

The annual BestPlaces Comfort Index for Fairfield is 8.3 (10=best), which means it is more comfortable than most places in California.

Today's Weather - Fairfield, CA

69°F

Today's Weather - Rohnert Park, CA

59°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Fairfield / Rohnert Park

July is the hottest month for Fairfield with an average high temperature of 89.8°, which ranks it as about average compared to other places in California. In Fairfield, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Fairfield are October, May and April.

September is the hottest month for Rohnert Park with an average high temperature of 82.7°, which ranks it as cooler than most places in California. In Rohnert Park, there are 6 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Rohnert Park are October, June and May.

December has the coldest nighttime temperatures for Fairfield with an average of 38.5°. This is about average compared to other places in California.

December has the coldest nighttime temperatures for Rohnert Park with an average of 38.0°. This is about average compared to other places in California.

In Fairfield, there are 59.2 days annually when the high temperature is over 90°, which is about average compared to other places in California.

In Rohnert Park, there are 25.0 days annually when the high temperature is over 90°, which is cooler than most places in California.

In Fairfield, there are 13.1 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in California.

In Rohnert Park, there are 18.2 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in California.

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

December is the wettest month in Fairfield with 4.9 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 24.8 inches in Fairfield means that it is wetter than most places in California.


December is the wettest month in Rohnert Park with 6.0 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 31.6 inches in Rohnert Park means that it is wetter than most places in California.

January is the rainiest month in Fairfield with 11.5 days of rain, and July is the driest month with only 0.0 rainy days. There are 64.7 rainy days annually in Fairfield, 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.

January is the rainiest month in Rohnert Park with 12.6 days of rain, and July is the driest month with only 0.2 rainy days. There are 75.2 rainy days annually in Rohnert Park, which is rainier than most places in California. The rainiest season is Spring when it rains 49% of the time and the driest is Autumn with only a 2% chance of a rainy day.

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

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

Any measurable snowfall is a rare occurance in Fairfield.

Any measurable snowfall is a rare occurance in Rohnert Park.