Zip 62518 (Chestnut, IL) Climate

The climate in 62518 Chestnut, IL is typically warm and humid during the summer months, with temperatures average in the mid-80s Fahrenheit. Winters are cold and snowy, with temperatures dropping into the teens Fahrenheit. Rainfall is usually moderate throughout the year, with an average of 40 inches annually. The area also experiences occasional thunderstorms and strong winds in the springtime.

Chestnut (zip 62518), Illinois gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Chestnut (zip 62518) averages 17 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 198 sunny days per year in Chestnut (zip 62518). The US average is 205 sunny days.

Chestnut (zip 62518) gets some kind of precipitation, on average, 108 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 19
Rain: averages 39 inches of rain a year
Snow: averages 17 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for the 62518 zip code is 7.1 (10=best), which means it is more comfortable than most places in Illinois.

8.3 Summer - 5.2 Winter

September, June and May are the most pleasant months in the 62518 zip code, while January and December are the least comfortable months.

Climate	Chestnut, Illinois	United States
	Unlock	38.1 in.
	17.4 in.	Unlock
	Unlock	106.2 days
	198 days	Unlock
	86.4°	85.8°
	Unlock	21.7°
	7.1	Unlock
	Unlock	4.3
	615 ft.	Unlock

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 the 62518 zip code with an average high temperature of 86.4°, which ranks it as warmer than most places in Illinois. In the 62518 zip code, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for the 62518 zip code are September, May and June.

In the 62518 zip code, there are 22.9 days annually when the high temperature is over 90°, which is hotter than most places in Illinois.

January has the coldest nighttime temperatures for the 62518 zip code with an average of 18.8°. This is warmer than most places in Illinois.

In the 62518 zip code, there are 112.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Illinois.

In the 62518 zip code, there are 4.7 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Illinois.

The humidity can be uncomfortably heavy or close in the 62518 zip code during the summer months. July is the most humid month, though humidity is low for most of the year. July, August and June are the three most humid months in the 62518 zip code.

July is the wettest month in the 62518 zip code with 4.7 inches of rain, and the driest month is January with 1.9 inches. The wettest season is Autumn with 32% of yearly precipitation and 17% occurs in Spring, which is the driest season. The annual rainfall of 39.3 inches in the 62518 zip code means that it is about average compared to other places in Illinois.

May is the rainiest month in the 62518 zip code with 11.0 days of rain, and September is the driest month with only 7.2 rainy days. There are 108.0 rainy days annually in the 62518 zip code, which is about average compared to other places in Illinois. The rainiest season is Summer when it rains 29% of the time and the driest is Spring with only a 23% chance of a rainy day.

An annual snowfall of 17.4 inches in the 62518 zip code means that it is less snowy than most places in Illinois. December is the snowiest month in the 62518 zip code with 5.4 inches of snow, and 4 months of the year have significant snowfall.

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