Johnson County, IN Climate

Johnson, IN County has a humid continental climate, with summer temperatures in the 70s and 80s and winter temperatures often dropping below freezing. Precipitation is fairly evenly distributed throughout the year, but snowfall varies from less than 10 inches in some years to over 20 inches in others. The county experiences all four seasons, although summers are typically hot and humid while winters can be quite cold. The area enjoys plenty of sunshine year-round, which helps to offset the colder winter months.

Johnson County, Indiana gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Johnson County averages 19 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 187 sunny days per year in Johnson County. The US average is 205 sunny days.

Johnson County gets some kind of precipitation, on average, 119 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 85 degrees
Winter Low: the January low is 19
Rain: averages 44 inches of rain a year
Snow: averages 19 inches of snow a year

Bestplaces Comfort Index

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

8.6 Summer - 5 Winter

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

Climate	Johnson, Indiana	United States
	44.0 in.	38.1 in.
	19.4 in.	27.8 in.
	119.3 days	106.2 days
	187 days	205 days
	84.6°	85.8°
	18.5°	21.7°
	7.1	7
	3.6	4.3
	776 ft.	2443 ft.

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 Johnson County with an average high temperature of 84.6°, which ranks it as warmer than most places in Indiana. In Johnson County, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Johnson County are September, June and May.

In Johnson County, there are 13.0 days annually when the high temperature is over 90°, which is about average compared to other places in Indiana.

January has the coldest nighttime temperatures for Johnson County with an average of 18.5°. This is about average compared to other places in Indiana.

In Johnson County, there are 119.0 days annually when the nighttime low temperature falls below freezing, which is about average compared to other places in Indiana.

In Johnson County, there are 5.6 days annually when the nighttime low temperature falls below zero°, which is about average compared to other places in Indiana.

The humidity is usually acceptable in Johnson County but some summer months can be sticky or muggy. July is the most humid month, though humidity is low for most of the year. July, August and June are the three most uncomfortably humid months in Johnson County.

May is the wettest month in Johnson County with 5.4 inches of rain, and the driest month is February with 2.4 inches. The wettest season is Summer with 30% of yearly precipitation and 20% occurs in Spring, which is the driest season. The annual rainfall of 44.0 inches in Johnson County means that it is wetter than most places in Indiana.

May is the rainiest month in Johnson County with 12.3 days of rain, and September is the driest month with only 7.5 rainy days. There are 119.3 rainy days annually in Johnson County, which is about average compared to other places in Indiana. The rainiest season is Summer when it rains 29% of the time and the driest is Winter with only a 21% chance of a rainy day.

An annual snowfall of 19.4 inches in Johnson County means that it is about average compared to other places in Indiana. January is the snowiest month in Johnson County with 6.1 inches of snow, and 4 months of the year have significant snowfall.

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