2025 Compare Climate & Weather:
San Diego, CA vs Dayton, NV

Highlights

On average, there are 255 sunny days per year in Dayton. San Diego averages 266 sunny days per year. The US average is 205 sunny days.

Dayton, Nevada gets 8.4 inches of rain, on average, per year. San Diego, California gets 11.7 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Dayton averages 12.6 inches of snow per year. San Diego averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Dayton, Nevada
Summer High: the July high is around 91.1 degrees
Winter Low: the January low is 23.3
Rain: averages 8.4 inches of rain a year
Snow: averages 12.6 inches of snow a year

San Diego, California
Summer High: the July high is around 78.5 degrees
Winter Low: the January low is 45.6
Rain: averages 11.7 inches of rain a year
Snow: averages 0 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Dayton is 7.6 (10=best), which means it is more comfortable than most places in Nevada.

The annual BestPlaces Comfort Index for San Diego is 9.2 (10=best), which means it is one of the most pleasant places in California.

Today's Weather - San Diego, CA

63°F

Today's Weather - Dayton, NV

54°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: San Diego / Dayton

August is the hottest month for San Diego with an average high temperature of 80.2°, which ranks it as cooler than most places in California. In San Diego, there are 7 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for San Diego are July, September and August.

July is the hottest month for Dayton with an average high temperature of 91.1°, which ranks it as about average compared to other places in Nevada. In Dayton, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Dayton are September, June and May.

December has the coldest nighttime temperatures for San Diego with an average of 45.3°. This is one of the warmest places in California.

January has the coldest nighttime temperatures for Dayton with an average of 23.3°. This is warmer than most places in Nevada.

In San Diego, there are 13.4 days annually when the high temperature is over 90°, which is cooler than most places in California.

In Dayton, there are 46.2 days annually when the high temperature is over 90°, which is about average compared to other places in Nevada.

In San Diego, there are 0.7 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in California.

In Dayton, there are 131.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Nevada.

In San Diego, 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 Dayton, there are 1.0 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Nevada.

February is the wettest month in San Diego with 2.5 inches of rain, and the driest month is August with 0.0 inches. The wettest season is Spring with 55% of yearly precipitation and 2% occurs in Autumn, which is the driest season. The annual rainfall of 11.7 inches in San Diego means that it is drier than most places in California.


December is the wettest month in Dayton with 1.2 inches of rain, and the driest month is July with 0.2 inches. The wettest season is Spring with 42% of yearly precipitation and 12% occurs in Autumn, which is the driest season. The annual rainfall of 8.4 inches in Dayton means that it is about average compared to other places in Nevada.

February is the rainiest month in San Diego with 6.8 days of rain, and August is the driest month with only 0.4 rainy days. There are 38.4 rainy days annually in San Diego, which is less rainy 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 Dayton with 6.7 days of rain, and July is the driest month with only 1.5 rainy days. There are 47.3 rainy days annually in Dayton, which is about average compared to other places in Nevada. The rainiest season is Spring when it rains 39% of the time and the driest is Autumn with only a 13% chance of a rainy day.

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

An annual snowfall of 12.6 inches in Dayton means that it is about average compared to other places in Nevada.

Any measurable snowfall is a rare occurance in San Diego.

December is the snowiest month in Dayton with 3.7 inches of snow, and 5 months of the year have significant snowfall.