Allentown, PA Climate


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Allentown, PA has a humid continental climate with hot and muggy summers and cold, snowy winters. During the summer months average highs are in the mid-80s with some occasional heat waves reaching beyond 90 degrees. During winter months, temperatures can dip below freezing with an average of around 30 inches of snowfall per season. Although the weather can be extreme at times, it provides a variety of activities throughout the year for those who visit or live in Allentown.

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

Allentown averages 29 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 201 sunny days per year in Allentown. The US average is 205 sunny days.

Allentown gets some kind of precipitation, on average, 122 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 86 degrees
Winter Low: the January low is 20
Rain: averages 47 inches of rain a year
Snow: averages 29 inches of snow a year


Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Allentown is 7.1 (10=best), which means it is more comfortable than most places in Pennsylvania.

8.6 Summer - 5.2 Winter
September, June and August are the most pleasant months in Allentown, while January and February are the least comfortable months.

  ClimateAllentown, PennsylvaniaUnited States
  46.6 in.38.1 in.
  29.2 in.27.8 in.
  122.0 days106.2 days
  201 days205 days
  85.9°85.8°
  19.8°21.7°
  7.17
  3.84.3
  341 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 Allentown with an average high temperature of 85.9°, which ranks it as one of the hottest places in Pennsylvania. In Allentown, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Allentown are September, June and May.
In Allentown, there are 22.0 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 Allentown with an average of 19.8°. This is about average compared to other places in Pennsylvania.
In Allentown, there are 121.8 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Pennsylvania.
In Allentown, there are 1.9 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 Allentown 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.
July is the wettest month in Allentown with 4.9 inches of rain, and the driest month is February with 2.8 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 46.6 inches in Allentown means that it is wetter than most places in Pennsylvania.
May is the rainiest month in Allentown with 12.1 days of rain, and September is the driest month with only 8.9 rainy days. There are 122.0 rainy days annually in Allentown, 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 29.2 inches in Allentown means that it is about average compared to other places in Pennsylvania. February is the snowiest month in Allentown with 9.8 inches of snow, and 6 months of the year have significant snowfall.
Reviews for Allentown
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Winter in Allentown is alright, mild temperatures, there isn't much snow but there are some nearby ski resorts with artificial snow. In the summer there are some fun  More

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do you like cold and snow? Allentown may not be the coldest place in the country but it gets very cold and the winter feels endless...arctic blast after another and  More

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Over 9 years ago

This is a beautiful place, kept clean by weekly street sweeping. A multitude of parks exist including the exceptional Rose Garden and sports fields, and people use them  More

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