Chester County, PA Weather


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United States / Pennsylvania / / Chester County / Cities / Zip Codes

The most pleasant months of the year for Chester County are September, June and August. In Chester County, there are 4 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Chester County with an average high temperature of 85.2°, which ranks it as warmer than most places in Pennsylvania. February is the snowiest month in Chester County with 8.9 inches of snow, and 6 months of the year have significant snowfall. July is the most humid month, though humidity is low for most of the year.

Today's Weather - Chester, PA

1 PM PST

Sunny

68°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
This AfternoonSunny74° / 42°NW 5 to 10 mph
FridaySunny67° / 39°W 0 to 10 mph
SaturdaySunny55° / 35°N 5 to 10 mph
SundayMostly Cloudy then Chance Rain Showers56° / 49°S 0 to 10 mph
Veterans DayChance Rain Showers then Mostly Sunny65° / 44°W 5 to 10 mph
TuesdayMostly Sunny58° / 37°NW 5 to 10 mph
WednesdayMostly Sunny56° / 41°NE 5 mph

Weather Highlights

Summer High: the July high is around 85 degrees
Winter Low: the January low is 21
Rain: averages 47 inches of rain a year
Snow: averages 24 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for the Chester County area is 8.7 (10=best), which means it is more comfortable than most places in Pennsylvania.

8.7 / 10

A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 7.8. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.


Average Monthly High and Low (°F)
HighLow
January38° 21°
February42° 23°
March51° 30°
April63° 40°
May72° 50°
June81° 59°
July85° 64°
August84° 62°
September76° 54°
October65° 43°
November54° 34°
December43° 25°
Hot, Freezing, Rainy, Snowy Days: Chester
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January027104
February02493
March018112
April05120
May10120
June30100
July60100
August4090
September1090
October0490
November013100
December024102

YOU SHOULD KNOW

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.

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