DuPage County, Illinois 

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Climate in DuPage County, Illinois

DuPage County, Illinois gets 38 inches of rain, on average, per year. The US average is 38 inches of rain per year.

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

On average, there are 189 sunny days per year in DuPage County. The US average is 205 sunny days.

DuPage County gets some kind of precipitation, on average, 121 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 38 inches of rain a year
Snow: averages 31 inches of snow a year


SPERLING'S COMFORT INDEX
DuPage County 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
  DuPage, IllinoisUnited States
  38.3 in.38.1 in.
  30.8 in.27.8 in.
  120.5 days106.2 days
  189 days205 days
  84.2°85.8°
  14.9°21.7°
  4254
  3.44.3
  729 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 DuPage County with an average high temperature of 84.2°, which ranks it as cooler than most places in Illinois. In DuPage County, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for DuPage County are June, September and August.


January has the coldest nighttime temperatures for DuPage County with an average of 14.9°. This is colder than most places in Illinois.


In DuPage County, there are 11.0 days annually when the high temperature is over 90°, which is cooler than most places in Illinois.


In DuPage County, there are 136.7 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Illinois.


In DuPage County, there are 6.6 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 DuPage County with 4.4 inches of rain, and the driest month is January with 1.8 inches. The wettest season is Autumn with 33% of yearly precipitation and 15% occurs in Spring, which is the driest season. The annual rainfall of 38.3 inches in DuPage County means that it is drier than most places in Illinois.


May is the rainiest month in DuPage County with 11.9 days of rain, and September is the driest month with only 8.2 rainy days. There are 120.5 rainy days annually in DuPage County, which is rainier than most 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 30.8 inches in DuPage County means that it is snowier than most places in Illinois.



January is the snowiest month in DuPage County with 10.1 inches of snow, and 6 months of the year have significant snowfall.


CLIMATE MAP
  • Annual Rainfall (US Avg: 36.5")
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    MAPS OF DUPAGE COUNTY, ILLINOIS
    ZIP CODES IN DUPAGE COUNTY, ILLINOIS
    60148, 60126, 60540, 60188, 60103, 60565, 60101, 60137, 60504, 60563, ... 36 more

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