Alexander County, IL Climate

Alexander County, IL is located in the temperate climate zone of the Midwest. Summers are hot and humid, while winters are typically cold with occasional snowfall. Precipitation is evenly distributed throughout the year, with average snowfall of 22 inches and average rainfall of 37 inches annually. Springtime is usually mild with temperatures ranging from 45 to 70 degrees Fahrenheit. Fall temperatures range from 30 to 65 degrees Fahrenheit. The area has a moderate number of sunny days per year, and the humidity levels tend to be low most days.

Alexander County, Illinois gets 48 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Alexander County averages 8 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 217 sunny days per year in Alexander County. The US average is 205 sunny days.

Alexander County gets some kind of precipitation, on average, 107 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 89 degrees
Winter Low: the January low is 25
Rain: averages 48 inches of rain a year
Snow: averages 8 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Alexander County is 7.2 (10=best), which means it is one of the most pleasant places in Illinois.

7 Summer - 5.8 Winter

September, May and October are the most pleasant months in Alexander County, while January and December are the least comfortable months.

Climate	Alexander, Illinois	United States
	Unlock	38.1 in.
	7.8 in.	Unlock
	Unlock	106.2 days
	217 days	Unlock
	89.2°	85.8°
	Unlock	21.7°
	7.2	Unlock
	Unlock	4.3
	388 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 Alexander County with an average high temperature of 89.2°, which ranks it as one of the hottest places in Illinois. In Alexander County, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Alexander County are May, September and October.

In Alexander County, there are 40.4 days annually when the high temperature is over 90°, which is one of the hottest places in Illinois.

January has the coldest nighttime temperatures for Alexander County with an average of 24.9°. This is one of the warmest places in Illinois.

In Alexander County, there are 85.1 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Illinois.

In Alexander County, there are 1.2 days annually when the nighttime low temperature falls below zero°, which is one of the warmest places in Illinois.

The humidity can be uncomfortably heavy or close in Alexander County 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 Alexander County.

May is the wettest month in Alexander County with 5.1 inches of rain, and the driest month is August with 2.8 inches. The wettest season is Summer with 29% of yearly precipitation and 22% occurs in Autumn, which is the driest season. The annual rainfall of 48.1 inches in Alexander County means that it is one of the wettest places in Illinois.

May is the rainiest month in Alexander County with 10.9 days of rain, and August is the driest month with only 6.3 rainy days. There are 106.7 rainy days annually in Alexander County, which is about average compared to other places in Illinois. The rainiest season is Summer when it rains 30% of the time and the driest is Autumn with only a 22% chance of a rainy day.

An annual snowfall of 7.8 inches in Alexander County means that it is one of the least snowy places in Illinois. February is the snowiest month in Alexander County with 3.0 inches of snow, and 4 months of the year have significant snowfall.

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