2025 Compare Climate & Weather:
Knoxville, TN vs San Clemente, CA

Highlights

On average, there are 281 sunny days per year in San Clemente. Knoxville averages 204 sunny days per year. The US average is 205 sunny days.

San Clemente, California gets 14 inches of rain, on average, per year. Knoxville, Tennessee gets 50.3 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

San Clemente averages 0 inches of snow per year. Knoxville averages 5.8 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

San Clemente, California
Summer High: the July high is around 83.6 degrees
Winter Low: the January low is 42.4
Rain: averages 14 inches of rain a year
Snow: averages 0 inches of snow a year

Knoxville, Tennessee
Summer High: the July high is around 88.1 degrees
Winter Low: the January low is 27.9
Rain: averages 50.3 inches of rain a year
Snow: averages 5.8 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Knoxville is 7.4 (10=best), which means it is more comfortable than most places in Tennessee.

Today's Weather - Knoxville, TN

49°F

Today's Weather - San Clemente, CA

57°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Knoxville / San Clemente

July is the hottest month for Knoxville with an average high temperature of 88.1°, which ranks it as cooler than most places in Tennessee. In Knoxville, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Knoxville are May, September and October.

August is the hottest month for San Clemente with an average high temperature of 85.6°, which ranks it as cooler than most places in California. In San Clemente, there are 7 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for San Clemente are June, October and May.

January has the coldest nighttime temperatures for Knoxville with an average of 27.9°. This is warmer than most places in Tennessee.

December has the coldest nighttime temperatures for San Clemente with an average of 41.4°. This is warmer than most places in California.

In Knoxville, there are 29.7 days annually when the high temperature is over 90°, which is cooler than most places in Tennessee.

In San Clemente, there are 32.7 days annually when the high temperature is over 90°, which is cooler than most places in California.

In Knoxville, there are 78.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Tennessee.

In San Clemente, there are 7.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in California.

In Knoxville, there are 0.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Tennessee.

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

July is the wettest month in Knoxville with 5.2 inches of rain, and the driest month is October with 2.7 inches. The wettest season is Spring with 28% of yearly precipitation and 21% occurs in Winter, which is the driest season. The annual rainfall of 50.3 inches in Knoxville means that it is drier than most places in Tennessee.


February is the wettest month in San Clemente with 3.4 inches of rain, and the driest month is June with 0.1 inches. The wettest season is Spring with 61% of yearly precipitation and 2% occurs in Autumn, which is the driest season. The annual rainfall of 14.0 inches in San Clemente means that it is drier than most places in California.

March is the rainiest month in Knoxville with 12.0 days of rain, and September is the driest month with only 8.1 rainy days. There are 127.3 rainy days annually in Knoxville, which is rainier than most places in Tennessee. The rainiest season is Summer when it rains 27% of the time and the driest is Winter with only a 21% chance of a rainy day.

February is the rainiest month in San Clemente with 6.3 days of rain, and July is the driest month with only 0.5 rainy days. There are 36.5 rainy days annually in San Clemente, 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.

An annual snowfall of 5.8 inches in Knoxville means that it is snowier than most places in Tennessee.

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

January is the snowiest month in Knoxville with 2.4 inches of snow, and 4 months of the year have significant snowfall.

Any measurable snowfall is a rare occurance in San Clemente.