Westtown, PA Climate


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United States / Pennsylvania / Philadelphia-Camden-Wilmington Metro Area / Chester County / Westtown / Zip Codes
Westtown, PA has a humid continental climate with cold winters and warm summers. During the winter months, temperatures usually average around 30 degrees Fahrenheit and snowfall can be heavy at times. Summers are warm with temperatures averaging around 70-80 degrees Fahrenheit and plenty of sunshine. Average precipitation is fairly even throughout the year, ranging from 3-4 inches per month.

Westtown, Pennsylvania gets 49 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Westtown averages 22 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 202 sunny days per year in Westtown. The US average is 205 sunny days.

Westtown gets some kind of precipitation, on average, 120 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 85 degrees
Winter Low: the January low is 22
Rain: averages 49 inches of rain a year
Snow: averages 22 inches of snow a year

Bestplaces Comfort Index

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

8.7 Summer - 5.4 Winter
June, September and May are the most pleasant months in Westtown, while January and February are the least comfortable months.

  ClimateWesttown, PennsylvaniaUnited States
    Unlock38.1 in.
  21.9 in.  Unlock
    Unlock106.2 days
  202 days  Unlock
  85.0°85.8°
    Unlock21.7°
  7.2  Unlock
    Unlock4.3
  262 ft.  Unlock
Climate
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.

July is the hottest month for Westtown with an average high temperature of 85.0°, which ranks it as warmer than most places in Pennsylvania. In Westtown, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Westtown are September, June and August.
In Westtown, there are 12.6 days annually when the high temperature is over 90°, which is hotter than most places in Pennsylvania.
January has the coldest nighttime temperatures for Westtown with an average of 21.7°. This is warmer than most places in Pennsylvania.
In Westtown, there are 110.7 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Pennsylvania.
In Westtown, there are 0.7 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Pennsylvania.
The humidity is usually comfortable in Westtown but some summer months can be sticky or muggy. July is the most humid month, though humidity is low for most of the year. The most humid months are July, August and June.
September is the wettest month in Westtown with 4.9 inches of rain, and the driest month is February with 3.1 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 48.7 inches in Westtown means that it is one of the wettest places in Pennsylvania.
April is the rainiest month in Westtown with 11.3 days of rain, and September is the driest month with only 8.7 rainy days. There are 119.7 rainy days annually in Westtown, 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.
An annual snowfall of 21.9 inches in Westtown means that it is less snowy than most places in Pennsylvania. February is the snowiest month in Westtown with 8.4 inches of snow, and 6 months of the year have significant snowfall.
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