Montgomery County, IL Climate

Montgomery County, IL has a humid continental climate. In the summer months, temperatures can reach up to 90 degrees Fahrenheit and in the winter months, temperatures can dip down to below 20 degrees Fahrenheit. Precipitation is spread out evenly throughout the year with an average of 40-45 inches of rain annually. The county experiences four distinct seasons with warm summers and cold winters. Snowfall averages around 24 inches per year and thunderstorms are common in the area during late spring and early summer. Overall, Montgomery County's climate provides moderate temperatures throughout the year with plenty of rainfall for agricultural activities.

Montgomery County, Illinois gets 40 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Montgomery County averages 16 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 Montgomery County. The US average is 205 sunny days.

Montgomery County gets some kind of precipitation, on average, 99 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 87 degrees
Winter Low: the January low is 20
Rain: averages 40 inches of rain a year
Snow: averages 16 inches of snow a year

Bestplaces Comfort Index

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

8.1 Summer - 5.4 Winter

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

Climate	Montgomery, Illinois	United States
	Unlock	38.1 in.
	15.8 in.	Unlock
	Unlock	106.2 days
	198 days	Unlock
	87.2°	85.8°
	Unlock	21.7°
	7.2	Unlock
	Unlock	4.3
	639 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 Montgomery County with an average high temperature of 87.2°, which ranks it as warmer than most places in Illinois. In Montgomery County, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Montgomery County are September, May and June.

In Montgomery County, there are 27.3 days annually when the high temperature is over 90°, which is hotter than most places in Illinois.

January has the coldest nighttime temperatures for Montgomery County with an average of 19.7°. This is warmer than most places in Illinois.

In Montgomery County, there are 108.3 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Illinois.

In Montgomery County, there are 4.4 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 Montgomery 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 Montgomery County.

May is the wettest month in Montgomery County with 4.7 inches of rain, and the driest month is February with 2.1 inches. The wettest season is Summer with 29% of yearly precipitation and 18% occurs in Spring, which is the driest season. The annual rainfall of 39.7 inches in Montgomery County means that it is wetter than most places in Illinois.

May is the rainiest month in Montgomery County with 10.5 days of rain, and September is the driest month with only 6.4 rainy days. There are 98.6 rainy days annually in Montgomery County, which is less rainy than most places in Illinois. The rainiest season is Summer when it rains 30% of the time and the driest is Spring with only a 22% chance of a rainy day.

An annual snowfall of 15.8 inches in Montgomery County means that it is less snowy than most places in Illinois. January is the snowiest month in Montgomery County with 5.3 inches of snow, and 4 months of the year have significant snowfall.

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