Stephenson County, Illinois 

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United States / Illinois / Freeport / Stephenson County / Cities / Zip Codes
IL Gifts

Climate in Stephenson County, Illinois

Stephenson County, Illinois gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Stephenson County averages 34 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 Stephenson County. The US average is 205 sunny days.

Stephenson County gets some kind of precipitation, on average, 113 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 11
Rain: averages 37 inches of rain a year
Snow: averages 34 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for Stephenson County is 6.8 (10=best), which means it is less comfortable than most places in Illinois.

9 / 4.3

Summer   /   Winter
June, September and August are the most pleasant months in Stephenson County, while January and December are the least comfortable months.

Climate Averages
  Stephenson, IllinoisUnited States
  36.9 in.38.1 in.
  34.4 in.27.8 in.
  113.1 days106.2 days
  191 days205 days
  83.5°85.8°
  10.9°21.7°
  6.87
  3.74.3
  871 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 Stephenson County with an average high temperature of 83.5°, which ranks it as cooler than most places in Illinois. In Stephenson County, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Stephenson County are June, September and August.


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


January has the coldest nighttime temperatures for Stephenson County with an average of 10.9°. This is one of the coldest places in Illinois.


In Stephenson County, there are 145.8 days annually when the nighttime low temperature falls below freezing, which is one of the coldest places in Illinois.


In Stephenson County, there are 15.7 days annually when the nighttime low temperature falls below zero°, which is one of the coldest places in Illinois.


The humidity is usually comfortable in Stephenson County 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.


June is the wettest month in Stephenson County with 4.9 inches of rain, and the driest month is January with 1.3 inches. The wettest season is Autumn with 36% of yearly precipitation and 13% occurs in Spring, which is the driest season. The annual rainfall of 36.9 inches in Stephenson County means that it is drier than most places in Illinois.


May is the rainiest month in Stephenson County with 12.0 days of rain, and February is the driest month with only 7.3 rainy days. There are 113.1 rainy days annually in Stephenson 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 Spring with only a 22% chance of a rainy day.


An annual snowfall of 34.4 inches in Stephenson County means that it is one of the snowiest places in Illinois. December is the snowiest month in Stephenson County with 10.2 inches of snow, and 6 months of the year have significant snowfall.





  • Annual Rainfall (US Avg: 36.5")
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    Reviews for Stephenson    1 Reviews
    The best of both worlds! - 10/25/2018
    I was born and raised in Freeport, IL and recently moved back to the area. The city has a small town feel to it, while only 100 miles from Chicago and 60 miles from... Read More

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    MAPS OF STEPHENSON COUNTY, ILLINOIS
    ZIP CODES IN STEPHENSON COUNTY, ILLINOIS
    61032, 61048, 61019, 61062, 61070, 61060, 61018, 61039, 61089, 61067, ... 14 more


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