Allen, PA Climate


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Allen, PA has a humid continental climate with four distinct seasons. Summers are hot and humid with average high temperatures in the mid 80's. Winters are cold with average low temperatures in the mid 20's. Fall and spring have mild temperatures and moderate rainfall throughout the season. Snowfall is common during winter months, but not excessive by any means. Overall, Allen has very pleasant weather year-round, making it an ideal destination for both outdoor recreation and relaxation.

Allen, Pennsylvania gets 47 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Allen averages 31 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 204 sunny days per year in Allen. The US average is 205 sunny days.

Allen gets some kind of precipitation, on average, 116 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 18
Rain: averages 47 inches of rain a year
Snow: averages 31 inches of snow a year


Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Allen is 7.0 (10=best), which means it is more comfortable than most places in Pennsylvania.

8.8 Summer - 5.1 Winter
June, September and August are the most pleasant months in Allen, while January and February are the least comfortable months.

  ClimateAllen, PennsylvaniaUnited States
  46.9 in.38.1 in.
  31.0 in.27.8 in.
  116.4 days106.2 days
  204 days205 days
  85.1°85.8°
  18.1°21.7°
  77
  3.74.3
  543 ft.2443 ft.
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 Allen with an average high temperature of 85.1°, which ranks it as warmer than most places in Pennsylvania. In Allen, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Allen are September, June and August.
In Allen, there are 17.2 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 Allen with an average of 18.1°. This is colder than most places in Pennsylvania.
In Allen, there are 134.0 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Pennsylvania.
In Allen, there are 2.8 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Pennsylvania.
The humidity is usually comfortable in Allen 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 Allen with 4.7 inches of rain, and the driest month is February with 2.9 inches. The wettest season is Autumn with 28% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 46.9 inches in Allen means that it is wetter than most places in Pennsylvania.
May is the rainiest month in Allen with 11.0 days of rain, and September is the driest month with only 8.5 rainy days. There are 116.4 rainy days annually in Allen, which is less rainy than most places in Pennsylvania. The rainiest season is Summer when it rains 27% of the time and the driest is Winter with only a 22% chance of a rainy day.
An annual snowfall of 31.0 inches in Allen means that it is about average compared to other places in Pennsylvania. February is the snowiest month in Allen with 11.1 inches of snow, and 6 months of the year have significant snowfall.
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