Glen Ellyn, Illinois 

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Climate in Glen Ellyn, Illinois

Glen Ellyn, Illinois gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Glen Ellyn averages 33 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 191 sunny days per year in Glen Ellyn. The US average is 205 sunny days.

Glen Ellyn 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 84 degrees
Winter Low: the January low is 15
Rain: averages 39 inches of rain a year
Snow: averages 33 inches of snow a year


SPERLING'S COMFORT INDEX
Glen Ellyn ranks 42/100 for Comfort Index

A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 54. 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.

CLIMATE

Climate Averages
  Glen Ellyn, IllinoisUnited States
  38.6 in.38.1 in.
  32.6 in.27.8 in.
  121.6 days106.2 days
  191 days205 days
  84.2°85.8°
  15.0°21.7°
  4254
  3.44.3
  741 ft.2443 ft.

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 Glen Ellyn with an average high temperature of 84.2°, which ranks it as cooler than most places in Illinois. In Glen Ellyn, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Glen Ellyn are June, September and August.


January has the coldest nighttime temperatures for Glen Ellyn with an average of 15.0°. This is colder than most places in Illinois.


In Glen Ellyn, there are 9.3 days annually when the high temperature is over 90°, which is one of the coolest places in Illinois.


In Glen Ellyn, there are 138.0 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Illinois.


In Glen Ellyn, there are 5.7 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Illinois.


August is the wettest month in Glen Ellyn with 4.2 inches of rain, and the driest month is January with 1.9 inches. The wettest season is Autumn with 32% of yearly precipitation and 16% occurs in Spring, which is the driest season. The annual rainfall of 38.6 inches in Glen Ellyn means that it is about average compared to other places in Illinois.


May is the rainiest month in Glen Ellyn with 11.9 days of rain, and September is the driest month with only 8.0 rainy days. There are 121.6 rainy days annually in Glen Ellyn, which is one of the rainiest places in Illinois. 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 32.6 inches in Glen Ellyn means that it is snowier than most places in Illinois.



January is the snowiest month in Glen Ellyn with 10.7 inches of snow, and 6 months of the year have significant snowfall.


CLIMATE MAP
  • Annual Rainfall (US Avg: 36.5")
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    Reviews for Glen Ellyn    2 Reviews
    Settled in 1834 - 10/7/2016
    My husband and I moved to Glen Ellyn from Chicago in 1993 when our first child was born. One thing you should know about GE is that it is spread out and there is an "in... Read More

    Start Your Review of Glen Ellyn


    Old Fashion Neighborhood living - 1/29/2014
    My husband and I are life long residents of the Chicago area and have lived in Glen Ellyn since 1998. It is a comfortable, walkable, old fashion neighborhood where you... Read More


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