2025 Compare Climate & Weather:
Philadelphia, PA vs Irvine, CA

Highlights

On average, there are 281 sunny days per year in Irvine. Philadelphia averages 207 sunny days per year. The US average is 205 sunny days.

Irvine, California gets 12.9 inches of rain, on average, per year. Philadelphia, Pennsylvania gets 47.2 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Irvine averages 0 inches of snow per year. Philadelphia averages 13.1 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Irvine, California
Summer High: the July high is around 81.5 degrees
Winter Low: the January low is 46.3
Rain: averages 12.9 inches of rain a year
Snow: averages 0 inches of snow a year

Philadelphia, Pennsylvania
Summer High: the July high is around 87 degrees
Winter Low: the January low is 26
Rain: averages 47.2 inches of rain a year
Snow: averages 13.1 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Irvine is 9.3 (10=best), which means it is one of the most pleasant places in California.

The annual BestPlaces Comfort Index for Philadelphia is 7.3 (10=best), which means it is one of the most pleasant places in Pennsylvania.

Today's Weather - Philadelphia, PA

68°F

Today's Weather - Irvine, CA

65°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Philadelphia / Irvine

July is the hottest month for Philadelphia with an average high temperature of 87.0°, which ranks it as one of the hottest places in Pennsylvania. In Philadelphia, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Philadelphia are September, May and June.

August is the hottest month for Irvine with an average high temperature of 83.2°, which ranks it as cooler than most places in California. In Irvine, there are 8 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Irvine are October, June and July.

January has the coldest nighttime temperatures for Philadelphia with an average of 26.0°. This is one of the warmest places in Pennsylvania.

December has the coldest nighttime temperatures for Irvine with an average of 45.5°. This is one of the warmest places in California.

In Philadelphia, there are 25.2 days annually when the high temperature is over 90°, which is one of the hottest places in Pennsylvania.

In Irvine, there are 17.4 days annually when the high temperature is over 90°, which is cooler than most places in California.

In Philadelphia, there are 77.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Pennsylvania.

In Irvine, there are 0.6 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in California.

In Philadelphia, there are 0.2 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Pennsylvania.

In Irvine, 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 Philadelphia with 4.7 inches of rain, and the driest month is February with 2.9 inches. The wettest season is Autumn with 28% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 47.2 inches in Philadelphia means that it is wetter than most places in Pennsylvania.


February is the wettest month in Irvine with 3.2 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 60% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 12.9 inches in Irvine means that it is drier than most places in California.

April is the rainiest month in Philadelphia with 11.7 days of rain, and September is the driest month with only 8.5 rainy days. There are 118.9 rainy days annually in Philadelphia, which is less rainy than most places in Pennsylvania. The rainiest season is Summer when it rains 28% of the time and the driest is Winter with only a 22% chance of a rainy day.

February is the rainiest month in Irvine with 6.5 days of rain, and July is the driest month with only 0.4 rainy days. There are 36.3 rainy days annually in Irvine, which is less rainy than most places in California. The rainiest season is Spring when it rains 50% of the time and the driest is Autumn with only a 4% chance of a rainy day.

An annual snowfall of 13.1 inches in Philadelphia means that it is one of the least snowy places in Pennsylvania.

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

February is the snowiest month in Philadelphia with 4.8 inches of snow, and 4 months of the year have significant snowfall.

Any measurable snowfall is a rare occurance in Irvine.