Decatur County, IN Climate

Decatur County, Indiana has a humid continental climate. The summers are hot and muggy, with average high temperatures in the mid-80s Fahrenheit (30C) and lows in the mid-60s (18C). July is typically the warmest month of the year. Winters are cold and wet, with average high temperatures in the upper 30s (4C) and lows in the low 20s (-6C). January is usually the coldest month. Precipitation is fairly consistent throughout the year, with snowfall during winter months. The area also experiences frequent thunderstorms during summer afternoons.

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

Decatur County averages 15 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 184 sunny days per year in Decatur County. The US average is 205 sunny days.

Decatur County gets some kind of precipitation, on average, 118 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 20
Rain: averages 45 inches of rain a year
Snow: averages 15 inches of snow a year

Bestplaces Comfort Index

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

8.6 Summer - 5.3 Winter

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

Climate	Decatur, Indiana	United States
	44.8 in.	38.1 in.
	14.5 in.	27.8 in.
	118.2 days	106.2 days
	184 days	205 days
	85.0°	85.8°
	20.1°	21.7°
	7.2	7
	4	4.3
	894 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 Decatur County with an average high temperature of 85.0°, which ranks it as warmer than most places in Indiana. In Decatur County, there are 4 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Decatur County are September, June and May.

In Decatur County, there are 14.8 days annually when the high temperature is over 90°, which is hotter than most places in Indiana.

January has the coldest nighttime temperatures for Decatur County with an average of 20.1°. This is warmer than most places in Indiana.

In Decatur County, there are 112.4 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Indiana.

In Decatur County, there are 4.5 days annually when the nighttime low temperature falls below zero°, which is warmer than most places in Indiana.

The humidity is usually acceptable in Decatur 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 Decatur County.

May is the wettest month in Decatur County with 5.4 inches of rain, and the driest month is February with 2.5 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 44.8 inches in Decatur County means that it is wetter than most places in Indiana.

April is the rainiest month in Decatur County with 12.5 days of rain, and September is the driest month with only 7.3 rainy days. There are 118.2 rainy days annually in Decatur County, which is about average compared to other places in Indiana. The rainiest season is Summer when it rains 30% of the time and the driest is Winter with only a 21% chance of a rainy day.

An annual snowfall of 14.5 inches in Decatur County means that it is less snowy than most places in Indiana. January is the snowiest month in Decatur County with 4.7 inches of snow, and 4 months of the year have significant snowfall.

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