2025 Compare Climate & Weather:
Irvine, CA vs St. Petersburg, FL

Highlights

On average, there are 248 sunny days per year in St. Petersburg. Irvine averages 281 sunny days per year. The US average is 205 sunny days.

St. Petersburg, Florida gets 50.7 inches of rain, on average, per year. Irvine, California gets 12.9 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

St. Petersburg averages 0 inches of snow per year. Irvine averages 0 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

St. Petersburg, Florida
Summer High: the July high is around 90.4 degrees
Winter Low: the January low is 52.5
Rain: averages 50.7 inches of rain a year
Snow: averages 0 inches of snow a year

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

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for St. Petersburg is 6.7 (10=best), which means it is less comfortable than most places in Florida.

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

Today's Weather - Irvine, CA

63°F

Today's Weather - St. Petersburg, FL

76°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Irvine / St. Petersburg

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.

August is the hottest month for St. Petersburg with an average high temperature of 90.4°, which ranks it as cooler than most places in Florida. In St. Petersburg, there are 6 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for St. Petersburg are November, March and April.

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

January has the coldest nighttime temperatures for St. Petersburg with an average of 52.5°. This is warmer than most places in Florida.

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

In St. Petersburg, there are 73.1 days annually when the high temperature is over 90°, which is about average compared to other places in Florida.

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 St. Petersburg, there are 0.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Florida.

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.

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

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.


August is the wettest month in St. Petersburg with 8.2 inches of rain, and the driest month is November with 1.8 inches. The wettest season is Autumn with 45% of yearly precipitation and 16% occurs in Summer, which is the driest season. The annual rainfall of 50.7 inches in St. Petersburg means that it is drier than most places in Florida.

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.

August is the rainiest month in St. Petersburg with 15.4 days of rain, and April is the driest month with only 4.8 rainy days. There are 101.8 rainy days annually in St. Petersburg, which is one of the least rainy places in Florida. The rainiest season is Autumn when it rains 42% of the time and the driest is Summer with only a 16% chance of a rainy day.

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

There is rarely any recorded snowfall in St. Petersburg, ranking it as one of the least snowy places in Florida.

Any measurable snowfall is a rare occurance in Irvine.

Any measurable snowfall is a rare occurance in St. Petersburg.