Franklin County, IL Climate

Franklin, IL County has a humid continental climate, which is typical of the Midwest United States. Summers in the area are typically hot and humid, while winters can be cold with some snowfall occurring. Spring and autumn tend to be mild but can have rapid fluctuations in temperatures as well as heavy rain and storms. Throughout the year there tend to be periods of drought due to lack of rainfall. The average annual temperature in Franklin is around 51 degrees Fahrenheit (10 degrees Celsius).

Franklin County, Illinois gets 45 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Franklin County averages 7 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 207 sunny days per year in Franklin County. The US average is 205 sunny days.

Franklin County gets some kind of precipitation, on average, 93 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 88 degrees
Winter Low: the January low is 24
Rain: averages 45 inches of rain a year
Snow: averages 7 inches of snow a year

Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Franklin County is 7.3 (10=best), which means it is one of the most pleasant places in Illinois.

7.6 Summer - 5.8 Winter

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

Climate	Franklin, Illinois	United States
	Unlock	38.1 in.
	7.4 in.	Unlock
	Unlock	106.2 days
	207 days	Unlock
	88.0°	85.8°
	Unlock	21.7°
	7.3	Unlock
	Unlock	4.3
	434 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 Franklin County with an average high temperature of 88.0°, which ranks it as warmer than most places in Illinois. In Franklin County, there are 3 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Franklin County are May, September and June.

In Franklin County, there are 33.6 days annually when the high temperature is over 90°, which is hotter than most places in Illinois.

January has the coldest nighttime temperatures for Franklin County with an average of 23.5°. This is one of the warmest places in Illinois.

In Franklin County, there are 93.5 days annually when the nighttime low temperature falls below freezing, which is one of the warmest places in Illinois.

In Franklin County, there are 1.5 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 Franklin 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 Franklin County.

May is the wettest month in Franklin County with 5.2 inches of rain, and the driest month is January with 2.8 inches. The wettest season is Summer with 30% of yearly precipitation and 21% occurs in Spring, which is the driest season. The annual rainfall of 44.6 inches in Franklin County means that it is one of the wettest places in Illinois.

May is the rainiest month in Franklin County with 10.3 days of rain, and September is the driest month with only 6.0 rainy days. There are 92.9 rainy days annually in Franklin County, which is one of the least rainy places in Illinois. The rainiest season is Summer when it rains 31% of the time and the driest is Spring with only a 23% chance of a rainy day.

An annual snowfall of 7.4 inches in Franklin County means that it is one of the least snowy places in Illinois. December is the snowiest month in Franklin County with 2.3 inches of snow, and 4 months of the year have significant snowfall.

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