Logan County, IL Climate

Logan, IL County has a humid continental climate with hot and humid summers and cold winters. Average daytime high temperatures in July often exceed 90°F (32°C) and night time lows can drop as low as 50°F (10°C). Winter temperatures average around 25°F (-4°C) during the day with below-freezing nighttime lows. Rainfall is relatively even throughout the year, with occasional snow during the winter months. Overall, Logan County experiences four distinct seasons with warm summers and cold winters.

Logan County, Illinois gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Logan County averages 18 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 197 sunny days per year in Logan County. The US average is 205 sunny days.

Logan 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 86 degrees
Winter Low: the January low is 18
Rain: averages 39 inches of rain a year
Snow: averages 18 inches of snow a year

Bestplaces Comfort Index

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

8.4 Summer - 5.2 Winter

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

Climate	Logan, Illinois	United States
	Unlock	38.1 in.
	18.2 in.	Unlock
	Unlock	106.2 days
	197 days	Unlock
	85.7°	85.8°
	Unlock	21.7°
	7.1	Unlock
	Unlock	4.3
	599 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 Logan County with an average high temperature of 85.7°, which ranks it as about average compared to other places in Illinois. In Logan County, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Logan County are September, May and June.

In Logan County, there are 20.3 days annually when the high temperature is over 90°, which is about average compared to other places in Illinois.

January has the coldest nighttime temperatures for Logan County with an average of 17.6°. This is about average compared to other places in Illinois.

In Logan County, there are 118.2 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Illinois.

In Logan County, there are 5.9 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Illinois.

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

July is the wettest month in Logan County with 4.5 inches of rain, and the driest month is January with 1.9 inches. The wettest season is Autumn with 32% of yearly precipitation and 16% occurs in Spring, which is the driest season. The annual rainfall of 38.7 inches in Logan County means that it is about average compared to other places in Illinois.

May is the rainiest month in Logan County with 11.0 days of rain, and September is the driest month with only 7.1 rainy days. There are 106.5 rainy days annually in Logan County, 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 18.2 inches in Logan County means that it is about average compared to other places in Illinois. December is the snowiest month in Logan County with 5.4 inches of snow, and 5 months of the year have significant snowfall.

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