2025 Compare Climate & Weather:
Mission Viejo, CA vs Santa Rosa, CA

Highlights

On average, there are 256 sunny days per year in Santa Rosa. Mission Viejo averages 283 sunny days per year. The US average is 205 sunny days.

Santa Rosa, California gets 38.2 inches of rain, on average, per year. Mission Viejo, California gets 14.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Santa Rosa averages 0 inches of snow per year. Mission Viejo averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Santa Rosa, California
Summer High: the July high is around 83.8 degrees
Winter Low: the January low is 38
Rain: averages 38.2 inches of rain a year
Snow: averages 0 inches of snow a year

Mission Viejo, California
Summer High: the July high is around 86.6 degrees
Winter Low: the January low is 44.4
Rain: averages 14.2 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Mission Viejo is 9.0 (10=best), which means it is more comfortable than most places in California.

Today's Weather - Mission Viejo, CA

66°F

Today's Weather - Santa Rosa, CA

71°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Mission Viejo / Santa Rosa

August is the hottest month for Mission Viejo with an average high temperature of 88.4°, which ranks it as about average compared to other places in California. In Mission Viejo, there are 6 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Mission Viejo are May, October and June.

August is the hottest month for Santa Rosa with an average high temperature of 84.1°, which ranks it as cooler than most places in California. In Santa Rosa, there are 7 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Santa Rosa are October, May and June.

December has the coldest nighttime temperatures for Mission Viejo with an average of 43.5°. This is warmer than most places in California.

December has the coldest nighttime temperatures for Santa Rosa with an average of 37.5°. This is about average compared to other places in California.

In Mission Viejo, there are 46.1 days annually when the high temperature is over 90°, which is about average compared to other places in California.

In Santa Rosa, there are 31.5 days annually when the high temperature is over 90°, which is cooler than most places in California.

In Mission Viejo, there are 5.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In Santa Rosa, there are 22.4 days annually when the nighttime low temperature falls below freezing, which is colder than most places in California.

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

February is the wettest month in Mission Viejo with 3.5 inches of rain, and the driest month is June with 0.1 inches. The wettest season is Spring with 60% of yearly precipitation and 2% occurs in Autumn, which is the driest season. The annual rainfall of 14.2 inches in Mission Viejo means that it is drier than most places in California.


December is the wettest month in Santa Rosa with 7.4 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 38.2 inches in Santa Rosa means that it is wetter than most places in California.

February is the rainiest month in Mission Viejo with 6.3 days of rain, and July is the driest month with only 0.5 rainy days. There are 37.0 rainy days annually in Mission Viejo, which is less rainy than most places in California. The rainiest season is Spring when it rains 47% of the time and the driest is Autumn with only a 5% chance of a rainy day.

January is the rainiest month in Santa Rosa with 12.8 days of rain, and July is the driest month with only 0.2 rainy days. There are 75.7 rainy days annually in Santa Rosa, 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 Mission Viejo, ranking it as one of the least snowy places in California.

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

Any measurable snowfall is a rare occurance in Mission Viejo.

Any measurable snowfall is a rare occurance in Santa Rosa.