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

Highlights

On average, there are 294 sunny days per year in Las Vegas. San Diego averages 266 sunny days per year. The US average is 205 sunny days.

Las Vegas, Nevada gets 5 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.

Las Vegas averages 0.3 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

Las Vegas, Nevada
Summer High: the July high is around 103.8 degrees
Winter Low: the January low is 37.1
Rain: averages 5 inches of rain a year
Snow: averages 0.3 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 Las Vegas is 7.4 (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 - Las Vegas, NV

82°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: San Diego / Las Vegas

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 Las Vegas with an average high temperature of 103.8°, which ranks it as warmer than most places in Nevada. In Las Vegas, there are 2 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Las Vegas are April, October and March.

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

December has the coldest nighttime temperatures for Las Vegas with an average of 36.6°. This is one of the warmest 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 Las Vegas, there are 129.0 days annually when the high temperature is over 90°, which is hotter than most 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 Las Vegas, there are 16.0 days annually when the nighttime low temperature falls below freezing, which is one of the warmest 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 Las Vegas, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is warmer than most 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.


February is the wettest month in Las Vegas with 0.8 inches of rain, and the driest month is May with 0.1 inches. The wettest season is Spring with 40% of yearly precipitation and 17% occurs in Summer, which is the driest season. The annual rainfall of 5.0 inches in Las Vegas means that it is drier than most 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.

February is the rainiest month in Las Vegas with 4.6 days of rain, and June is the driest month with only 0.6 rainy days. There are 26.1 rainy days annually in Las Vegas, which is one of the least rainy places in Nevada. The rainiest season is Spring when it rains 40% of the time and the driest is Winter with only a 20% 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 0.3 inches in Las Vegas means that it is less snowy than most places in Nevada.

Any measurable snowfall is a rare occurance in San Diego.

December is the snowiest month in Las Vegas with 0.2 inches of snow, and no months of the year have significant snowfall.