2025 Compare Climate & Weather:
Selbyville, DE vs Collegeville, PA

Highlights

On average, there are 203 sunny days per year in Collegeville. Selbyville averages 202 sunny days per year. The US average is 205 sunny days.

Collegeville, Pennsylvania gets 45.5 inches of rain, on average, per year. Selbyville, Delaware gets 44 inches of rain, on average, per year. The US average is 38.1 inches of rain per year.

Collegeville averages 16.5 inches of snow per year. Selbyville averages 11.4 inches of snow per year. The US average is 27.8 inches of snow per year.

Weather Highlights

Collegeville, Pennsylvania
Summer High: the July high is around 85.5 degrees
Winter Low: the January low is 20.9
Rain: averages 45.5 inches of rain a year
Snow: averages 16.5 inches of snow a year

Selbyville, Delaware
Summer High: the July high is around 85.9 degrees
Winter Low: the January low is 27.3
Rain: averages 44 inches of rain a year
Snow: averages 11.4 inches of snow a year

BestPlaces Comfort Index

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

The annual BestPlaces Comfort Index for Selbyville is 7.4 (10=best), which means it is one of the most pleasant places in Delaware.

Today's Weather - Selbyville, DE

64°F

Today's Weather - Collegeville, PA

60°F

Average Monthly High / Low (°F)

Hot, Freezing, Rainy, Snowy Days: Selbyville / Collegeville

July is the hottest month for Selbyville with an average high temperature of 85.9°, which ranks it as cooler than most places in Delaware. In Selbyville, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Selbyville are September, June and May.

July is the hottest month for Collegeville with an average high temperature of 85.5°, which ranks it as one of the hottest places in Pennsylvania. In Collegeville, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Collegeville are September, June and May.

January has the coldest nighttime temperatures for Selbyville with an average of 27.3°. This is warmer than most places in Delaware.

January has the coldest nighttime temperatures for Collegeville with an average of 20.9°. This is warmer than most places in Pennsylvania.

In Selbyville, there are 20.3 days annually when the high temperature is over 90°, which is cooler than most places in Delaware.

In Collegeville, there are 17.8 days annually when the high temperature is over 90°, which is one of the hottest places in Pennsylvania.

In Selbyville, there are 81.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Delaware.

In Collegeville, there are 118.6 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Pennsylvania.

In Selbyville, there are 0.0 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Delaware.

In Collegeville, there are 1.3 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Pennsylvania.

August is the wettest month in Selbyville with 4.4 inches of rain, and the driest month is February with 3.0 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 44.0 inches in Selbyville means that it is one of the driest places in Delaware.


September is the wettest month in Collegeville with 4.5 inches of rain, and the driest month is February with 2.6 inches. The wettest season is Autumn with 27% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 45.5 inches in Collegeville means that it is wetter than most places in Pennsylvania.

May is the rainiest month in Selbyville with 11.1 days of rain, and February is the driest month with only 9.3 rainy days. There are 121.9 rainy days annually in Selbyville, which is rainier than most places in Delaware. The rainiest season is Summer when it rains 27% of the time and the driest is Spring with only a 24% chance of a rainy day.

April is the rainiest month in Collegeville with 11.0 days of rain, and February is the driest month with only 7.7 rainy days. There are 110.8 rainy days annually in Collegeville, which is one of the least rainy 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.

An annual snowfall of 11.4 inches in Selbyville means that it is less snowy than most places in Delaware.

An annual snowfall of 16.5 inches in Collegeville means that it is one of the least snowy places in Pennsylvania.

February is the snowiest month in Selbyville with 5.0 inches of snow, and 4 months of the year have significant snowfall.

February is the snowiest month in Collegeville with 7.3 inches of snow, and 4 months of the year have significant snowfall.