Zion, Illinois 

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Chicago Gifts

Climate in Zion, Illinois

Zion, Illinois gets 36 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Zion averages 41 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 192 sunny days per year in Zion. The US average is 205 sunny days.

Zion 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 80 degrees
Winter Low: the January low is 16
Rain: averages 36 inches of rain a year
Snow: averages 41 inches of snow a year


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

9.2 / 4.4

Summer   /   Winter
August, June and July are the most pleasant months in Zion, while January and February are the least comfortable months.

Climate Averages
  Zion, IllinoisUnited States
  35.6 in.38.1 in.
  40.7 in.27.8 in.
  113.4 days106.2 days
  192 days205 days
  646 ft.2443 ft.


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 Zion with an average high temperature of 80.3°, which ranks it as one of the coolest places in Illinois. In Zion, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Zion are August, July and June.

In Zion, there are 7.2 days annually when the high temperature is over 90°, which is one of the coolest places in Illinois.

January has the coldest nighttime temperatures for Zion with an average of 15.7°. This is colder than most places in Illinois.

In Zion, there are 126.5 days annually when the nighttime low temperature falls below freezing, which is colder than most places in Illinois.

In Zion, there are 7.4 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Illinois.

The humidity is usually comfortable in Zion 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.

May is the wettest month in Zion with 4.0 inches of rain, and the driest month is January with 1.6 inches. The wettest season is Autumn with 31% of yearly precipitation and 15% occurs in Spring, which is the driest season. The annual rainfall of 35.6 inches in Zion means that it is one of the driest places in Illinois.

May is the rainiest month in Zion with 11.5 days of rain, and February is the driest month with only 7.4 rainy days. There are 113.4 rainy days annually in Zion, 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 23% chance of a rainy day.

An annual snowfall of 40.7 inches in Zion means that it is one of the snowiest places in Illinois. January is the snowiest month in Zion with 13.1 inches of snow, and 6 months of the year have significant snowfall.

  • Annual Rainfall (US Avg: 36.5")
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    Reviews for Zion    1 Reviews
    Historic Little Town - 5/26/2010
    I spent part of my childhood in Zion, moved away for 10 years, then came back while commuting to SAIC in Chicago. The town hadn't changed much. But in the last couple... Read More

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