Marion County, IN Climate


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Marion County, IN has a humid continental type of climate. Summers are typically hot and humid with temperatures regularly topping 80 degrees Fahrenheit, while winters tend to be cold and snowy with the average temperature dropping below freezing for much of the season. Precipitation is fairly evenly distributed throughout the year with a slight peak in late summer or early fall. Snowfall varies from year to year but tends to remain moderate overall. Overall, Marion County offers mild weather conditions that make it an ideal place to live and visit.

Marion County, Indiana gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Marion County averages 22 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 Marion County. The US average is 205 sunny days.

Marion County gets some kind of precipitation, on average, 122 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 84 degrees
Winter Low: the January low is 20
Rain: averages 43 inches of rain a year
Snow: averages 22 inches of snow a year


Bestplaces Comfort Index

The annual BestPlaces Comfort Index for Marion 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 Marion County, while January and December are the least comfortable months.

  ClimateMarion, IndianaUnited States
  42.5 in.38.1 in.
  21.8 in.27.8 in.
  122.4 days106.2 days
  187 days205 days
  84.2°85.8°
  19.5°21.7°
  7.17
  3.74.3
  792 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 Marion County with an average high temperature of 84.2°, which ranks it as about average compared to other places in Indiana. In Marion County, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Marion County are September, June and August.
In Marion County, there are 11.3 days annually when the high temperature is over 90°, which is cooler than most places in Indiana.
January has the coldest nighttime temperatures for Marion County with an average of 19.5°. This is warmer than most places in Indiana.
In Marion County, there are 111.1 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Indiana.
In Marion 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 Marion 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 Marion County.
May is the wettest month in Marion County with 5.1 inches of rain, and the driest month is February with 2.3 inches. The wettest season is Summer with 29% of yearly precipitation and 19% occurs in Spring, which is the driest season. The annual rainfall of 42.5 inches in Marion County means that it is about average compared to other places in Indiana.
May is the rainiest month in Marion County with 12.8 days of rain, and September is the driest month with only 7.8 rainy days. There are 122.4 rainy days annually in Marion County, which is rainier than most 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 21.8 inches in Marion County means that it is snowier than most places in Indiana. January is the snowiest month in Marion County with 6.7 inches of snow, and 4 months of the year have significant snowfall.
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