Climate in Indianapolis, IN

Indianapolis, IN has a humid continental climate with four distinct seasons. Summers are hot and humid, with temperatures typically reaching into the high 80s and low 90s. Winters are cold and snowy, with temperatures often dipping below freezing. Spring is mild but rainy, and fall brings crisp cool air as well as some of the most beautiful foliage in the Midwest. Precipitation is fairly even throughout the year, averaging around 40 inches annually.

Indianapolis, Indiana gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.

Indianapolis averages 22 inches of snow per year. The US average is 28 inches of snow per year.

On average, there are 186 sunny days per year in Indianapolis. The US average is 205 sunny days.

Indianapolis 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.

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Weather Highlights

Summer High: the July high is around 84 degrees
Winter Low: the January low is 20
Rain: averages 42 inches of rain a year
Snow: averages 22 inches of snow a year

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BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for Indianapolis is 7.0 (10=best), which means it is about average compared to other places in Indiana.

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

July is the hottest month for Indianapolis with an average high temperature of 84.0°, which ranks it as about average compared to other places in Indiana. In Indianapolis, there are 5 comfortable months with high temperatures in the range of 70-85°. The most pleasant months of the year for Indianapolis are September, June and August.

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In Indianapolis, there are 11.3 days annually when the high temperature is over 90°, which is cooler than most places in Indiana.

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January has the coldest nighttime temperatures for Indianapolis with an average of 19.5°. This is warmer than most places in Indiana.

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In Indianapolis, there are 110.9 days annually when the nighttime low temperature falls below freezing, which is warmer than most places in Indiana.

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

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The humidity is usually acceptable in Indianapolis 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 Indianapolis.

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May is the wettest month in Indianapolis 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 42.4 inches in Indianapolis means that it is about average compared to other places in Indiana.

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May is the rainiest month in Indianapolis with 12.8 days of rain, and September is the driest month with only 7.8 rainy days. There are 122.1 rainy days annually in Indianapolis, 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 22% chance of a rainy day.

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An annual snowfall of 21.6 inches in Indianapolis means that it is about average compared to other places in Indiana. January is the snowiest month in Indianapolis with 6.7 inches of snow, and 4 months of the year have significant snowfall.

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