2025 Compare Climate & Weather:
Coatesville, PA vs Norristown, PA

Highlights

On average, there are 209 sunny days per year in Norristown. Coatesville averages 205 sunny days per year. The US average is 205 sunny days.

Norristown, Pennsylvania gets 46.9 inches of rain, on average, per year. Coatesville, Pennsylvania gets 49 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Norristown averages 16.7 inches of snow per year. Coatesville averages 28.7 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Norristown, Pennsylvania
Summer High: the July high is around 87.2 degrees
Winter Low: the January low is 21.2
Rain: averages 46.9 inches of rain a year
Snow: averages 16.7 inches of snow a year

Coatesville, Pennsylvania
Summer High: the July high is around 84.8 degrees
Winter Low: the January low is 20.5
Rain: averages 49 inches of rain a year
Snow: averages 28.7 inches of snow a year

BestPlaces Comfort Index

The annual BestPlaces Comfort Index for Norristown is 7.2 (10=best), which means it is one of the most pleasant places in Pennsylvania.

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

Today's Weather - Coatesville, PA

62°F

Today's Weather - Norristown, PA

64°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Coatesville / Norristown

July is the hottest month for Coatesville with an average high temperature of 84.8°, which ranks it as warmer than most places in Pennsylvania. In Coatesville, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Coatesville are September, June and August.

July is the hottest month for Norristown with an average high temperature of 87.2°, which ranks it as one of the hottest places in Pennsylvania. In Norristown, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Norristown are September, May and June.

January has the coldest nighttime temperatures for Coatesville with an average of 20.5°. This is warmer than most places in Pennsylvania.

January has the coldest nighttime temperatures for Norristown with an average of 21.2°. This is warmer than most places in Pennsylvania.

In Coatesville, there are 12.5 days annually when the high temperature is over 90°, which is hotter than most places in Pennsylvania.

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

In Coatesville, there are 120.1 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Pennsylvania.

In Norristown, there are 115.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Pennsylvania.

In Coatesville, there are 0.9 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Pennsylvania.

In Norristown, there are 1.2 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Pennsylvania.

September is the wettest month in Coatesville with 4.8 inches of rain, and the driest month is February with 3.3 inches. The wettest season is Winter with 26% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 49.0 inches in Coatesville means that it is one of the wettest places in Pennsylvania.


September is the wettest month in Norristown with 4.6 inches of rain, and the driest month is February with 2.9 inches. The wettest season is Autumn with 26% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 46.9 inches in Norristown means that it is wetter than most places in Pennsylvania.

April is the rainiest month in Coatesville with 12.0 days of rain, and September is the driest month with only 8.9 rainy days. There are 125.3 rainy days annually in Coatesville, 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 23% chance of a rainy day.

April is the rainiest month in Norristown with 11.5 days of rain, and September is the driest month with only 8.0 rainy days. There are 113.6 rainy days annually in Norristown, which is one of the least rainy places in Pennsylvania. The rainiest season is Summer when it rains 29% of the time and the driest is Winter with only a 22% chance of a rainy day.

An annual snowfall of 28.7 inches in Coatesville means that it is about average compared to other places in Pennsylvania.

An annual snowfall of 16.7 inches in Norristown means that it is one of the least snowy places in Pennsylvania.

February is the snowiest month in Coatesville with 10.3 inches of snow, and 6 months of the year have significant snowfall.

February is the snowiest month in Norristown with 7.4 inches of snow, and 4 months of the year have significant snowfall.