Chester, Pennsylvania 

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Climate in Chester, Pennsylvania

Chester, Pennsylvania gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Chester averages 15 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 206 sunny days per year in Chester. The US average is 205 sunny days.

Chester gets some kind of precipitation, on average, 112 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.

Weather Highlights

Summer High: the July high is around 87 degrees
Winter Low: the January low is 27
Rain: averages 43 inches of rain a year
Snow: averages 15 inches of snow a year


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

8.1 / 5.8

Summer   /   Winter
September, June and May are the most pleasant months in Chester, while January and February are the least comfortable months.

Climate Averages
  Chester, PennsylvaniaUnited States
  42.9 in.38.1 in.
  14.8 in.27.8 in.
  112.3 days106.2 days
  206 days205 days
  13 ft.2443 ft.


Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.

July is the hottest month for Chester with an average high temperature of 87.4°, which ranks it as one of the hottest places in Pennsylvania. In Chester, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Chester are September, May and June.

In Chester, there are 26.4 days annually when the high temperature is over 90°, which is one of the hottest places in Pennsylvania.

January has the coldest nighttime temperatures for Chester with an average of 26.7°. This is one of the warmest places in Pennsylvania.

In Chester, there are 71.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Pennsylvania.

In Chester, there are 0.1 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Pennsylvania.

The humidity is usually comfortable in Chester but some summer months can be unpleasant. July is the most humid month, though humidity is low for most of the year. The most humid months in Chester are July, August and June.

July is the wettest month in Chester with 4.5 inches of rain, and the driest month is February with 2.8 inches. The wettest season is Autumn with 27% of yearly precipitation and 22% occurs in Spring, which is the driest season. The annual rainfall of 42.9 inches in Chester means that it is about average compared to other places in Pennsylvania.

April is the rainiest month in Chester with 10.9 days of rain, and October is the driest month with only 8.1 rainy days. There are 112.3 rainy days annually in Chester, 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 14.8 inches in Chester means that it is one of the least snowy places in Pennsylvania. February is the snowiest month in Chester with 5.4 inches of snow, and 4 months of the year have significant snowfall.

  • Annual Rainfall (US Avg: 36.5")
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    Reviews for Chester    7 Reviews
    TRANSPORTATION - 1/17/2014

    Start Your Review of Chester

    Don't move there! I did and I'm leaving ASAP! - 10/8/2013
    The people are the problem in Chester PA. Probably 97% of the poplulation abuses drugs. Many of the people that live there aide the drug dealers because they grew up... Read More

    This poor city and its poor inhabitants. . . - 4/3/2009
    25% of the population living below the poverty line, at times the drop out rate from the high school has been 50% (which explains why 25% of adults over 18 don't have a... Read More

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