2025 Compare Climate & Weather:
Pittsburgh, PA vs San Francisco, CA

Highlights

On average, there are 259 sunny days per year in San Francisco. Pittsburgh averages 160 sunny days per year. The US average is 205 sunny days.

San Francisco, California gets 24.6 inches of rain, on average, per year. Pittsburgh, Pennsylvania gets 38.3 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

San Francisco averages 0 inches of snow per year. Pittsburgh averages 27.7 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

San Francisco, California
Summer High: the July high is around 67.2 degrees
Winter Low: the January low is 45.5
Rain: averages 24.6 inches of rain a year
Snow: averages 0 inches of snow a year

Pittsburgh, Pennsylvania
Summer High: the July high is around 83.5 degrees
Winter Low: the January low is 21
Rain: averages 38.3 inches of rain a year
Snow: averages 27.7 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for San Francisco is 8.5 (10=best), which means it is more comfortable than most places in California.

The annual BestPlaces Comfort Index for Pittsburgh is 7.1 (10=best), which means it is more comfortable than most places in Pennsylvania.

Today's Weather - Pittsburgh, PA

67°F

Today's Weather - San Francisco, CA

52°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Pittsburgh / San Francisco

July is the hottest month for Pittsburgh with an average high temperature of 83.5°, which ranks it as about average compared to other places in Pennsylvania. In Pittsburgh, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Pittsburgh are June, September and August.

September is the hottest month for San Francisco with an average high temperature of 69.9°, which ranks it as one of the coolest places in California. In San Francisco, there are 0 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for San Francisco are September, October and August.

January has the coldest nighttime temperatures for Pittsburgh with an average of 21.0°. This is warmer than most places in Pennsylvania.

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

In Pittsburgh, there are 8.8 days annually when the high temperature is over 90°, which is about average compared to other places in Pennsylvania.

In San Francisco, there are 1.9 days annually when the high temperature is over 90°, which is one of the coolest places in California.

In Pittsburgh, there are 114.2 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Pennsylvania.

In San Francisco, there are 0.3 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in California.

In Pittsburgh, there are 1.5 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Pennsylvania.

In San Francisco, 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 Pittsburgh with 3.9 inches of rain, and the driest month is February with 2.4 inches. The wettest season is Autumn with 29% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 38.3 inches in Pittsburgh means that it is one of the driest places in Pennsylvania.


January is the wettest month in San Francisco with 4.8 inches of rain, and the driest month is July with 0.0 inches. The wettest season is Spring with 57% of yearly precipitation and 1% occurs in Autumn, which is the driest season. The annual rainfall of 24.6 inches in San Francisco means that it is wetter than most places in California.

January is the rainiest month in Pittsburgh with 14.5 days of rain, and August is the driest month with only 9.1 rainy days. There are 140.4 rainy days annually in Pittsburgh, which is about average compared to other places in Pennsylvania. The rainiest season is Spring when it rains 29% of the time and the driest is Autumn with only a 22% chance of a rainy day.

December is the rainiest month in San Francisco with 11.7 days of rain, and July is the driest month with only 0.6 rainy days. There are 72.3 rainy days annually in San Francisco, which is rainier 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 27.7 inches in Pittsburgh means that it is less snowy than most places in Pennsylvania.

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

January is the snowiest month in Pittsburgh with 9.1 inches of snow, and 6 months of the year have significant snowfall.

Any measurable snowfall is a rare occurance in San Francisco.