2025 Compare Climate & Weather:
Ellicott City, MD vs San Diego, CA

Highlights

On average, there are 266 sunny days per year in San Diego. Ellicott City averages 206 sunny days per year. The US average is 205 sunny days.

San Diego, California gets 11.7 inches of rain, on average, per year. Ellicott City, Maryland gets 45.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

San Diego averages 0 inches of snow per year. Ellicott City averages 17.6 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

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

Ellicott City, Maryland
Summer High: the July high is around 87.9 degrees
Winter Low: the January low is 23.9
Rain: averages 45.2 inches of rain a year
Snow: averages 17.6 inches of snow a year

BestPlaces Comfort Index

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.

The annual BestPlaces Comfort Index for Ellicott City is 7.3 (10=best), which means it is more comfortable than most places in Maryland.

Today's Weather - Ellicott City, MD

65°F

Today's Weather - San Diego, CA

60°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Ellicott City / San Diego

July is the hottest month for Ellicott City with an average high temperature of 87.9°, which ranks it as warmer than most places in Maryland. In Ellicott City, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Ellicott City are September, May and June.

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.

January has the coldest nighttime temperatures for Ellicott City with an average of 23.9°. This is colder than most places in Maryland.

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

In Ellicott City, there are 29.2 days annually when the high temperature is over 90°, which is hotter than most places in Maryland.

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 Ellicott City, there are 100.0 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Maryland.

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 Ellicott City, there are 0.9 days annually when the nighttime low temperature falls below zero°, which is colder than most places in Maryland.

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.

May is the wettest month in Ellicott City with 4.4 inches of rain, and the driest month is February with 3.1 inches. The wettest season is Summer with 27% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 45.2 inches in Ellicott City means that it is wetter than most places in Maryland.


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.

May is the rainiest month in Ellicott City with 11.6 days of rain, and October is the driest month with only 8.3 rainy days. There are 114.3 rainy days annually in Ellicott City, which is rainier than most places in Maryland. The rainiest season is Summer when it rains 29% of the time and the driest is Winter with only a 23% chance of a rainy day.

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.

An annual snowfall of 17.6 inches in Ellicott City means that it is snowier than most places in Maryland.

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

February is the snowiest month in Ellicott City with 6.1 inches of snow, and 5 months of the year have significant snowfall.

Any measurable snowfall is a rare occurance in San Diego.