Indianapolis, IN Weather by Month and Climate Averages

How much rain does Indianapolis get?

Indianapolis gets 43.6 in of precipitation in an average year, spread over about 128 days with measurable rain. That is more rainy days than 84% of the US.

June is the wettest month, with 5.0 in. February is the driest, with 2.4 in. May has the most rainy days, about 13.

The longest dry spell in the last five years lasted 18 days, to October 12, 2022.

See where Indianapolis ranks: rainiest cities in the US, US cities with the most rainy days, rainiest cities in Indiana.

Does it snow in Indianapolis?

Yes. Indianapolis gets about 25.5 in of snow in an average season, measured at the reporting station.

The snowiest winter on record is 1981–82, with 58.2 in.

The most recent measurable snow at the station fell on March 17, 2026.

See where Indianapolis ranks: snowiest cities in the US.

Indianapolis weather by month

Indianapolis weather in January

In January, Indianapolis averages a high of 36°F and a low of 21°F. It gets 3.1 in of precipitation over about 12 rainy days. The sun is out about 26% of daylight hours. The January record high is 68°F (2008) and the record low is -27°F (1994).

Indianapolis weather in February

In February, Indianapolis averages a high of 41°F and a low of 24°F. It gets 2.4 in of precipitation over about 10 rainy days. The sun is out about 38% of daylight hours. The February record high is 77°F (2018) and the record low is -21°F (1982).

Indianapolis weather in March

In March, Indianapolis averages a high of 52°F and a low of 33°F. It gets 3.7 in of precipitation over about 12 rainy days. The sun is out about 36% of daylight hours. The March record high is 88°F (2026) and the record low is -7°F (1980).

Indianapolis weather in April

In April, Indianapolis averages a high of 64°F and a low of 43°F. It gets 4.3 in of precipitation over about 12 rainy days. The sun is out about 40% of daylight hours. The April record high is 89°F (1970) and the record low is 18°F (1972). April is one of the most comfortable months to visit.

Indianapolis weather in May

In May, Indianapolis averages a high of 73°F and a low of 54°F. It gets 4.8 in of precipitation over about 13 rainy days. The sun is out about 38% of daylight hours. The May record high is 95°F (2018) and the record low is 27°F (2020). May is one of the most comfortable months to visit.

Indianapolis weather in June

In June, Indianapolis averages a high of 82°F and a low of 63°F. It gets 5.0 in of precipitation over about 12 rainy days. The sun is out about 47% of daylight hours. The June record high is 104°F (2012) and the record low is 37°F (1992).

Indianapolis weather in July

In July, Indianapolis averages a high of 85°F and a low of 66°F. It gets 4.4 in of precipitation over about 10 rainy days. The sun is out about 47% of daylight hours. The July record high is 105°F (2012) and the record low is 48°F (2001).

Indianapolis weather in August

In August, Indianapolis averages a high of 84°F and a low of 65°F. It gets 3.2 in of precipitation over about 8 rainy days. The sun is out about 49% of daylight hours. The August record high is 102°F (1988) and the record low is 42°F (1986).

Indianapolis weather in September

In September, Indianapolis averages a high of 78°F and a low of 58°F. It gets 3.1 in of precipitation over about 8 rainy days. The sun is out about 56% of daylight hours. The September record high is 100°F (2011) and the record low is 32°F (1993). September is one of the most comfortable months to visit.

Indianapolis weather in October

In October, Indianapolis averages a high of 66°F and a low of 45°F. It gets 3.2 in of precipitation over about 9 rainy days. The sun is out about 51% of daylight hours. The October record high is 92°F (2019) and the record low is 20°F (1981). October is one of the most comfortable months to visit.

Indianapolis weather in November

In November, Indianapolis averages a high of 52°F and a low of 35°F. It gets 3.5 in of precipitation over about 10 rainy days. The sun is out about 47% of daylight hours. The November record high is 79°F (1999) and the record low is 7°F (1976).

Indianapolis weather in December

In December, Indianapolis averages a high of 41°F and a low of 26°F. It gets 2.9 in of precipitation over about 12 rainy days. The sun is out about 31% of daylight hours. The December record high is 74°F (1982) and the record low is -23°F (1989).

Sunshine, humidity and wind in Indianapolis

September is the sunniest month in Indianapolis, with sunshine about 56% of daylight hours. January is the cloudiest, at 26%. Over the year the sun shines about 42% of daylight hours. Indianapolis is cloudier than 79% of the US.

Humidity peaks in January at 74% and is lowest in June at 59%.

Wind averages 10 mph over the year, and April is the windiest month at 11 mph.

Indianapolis has about 19 days a year above 90°F. Indianapolis is cooler than 62% of the US.

Thunderstorms occur on about 44 days a year.

See where Indianapolis ranks: sunniest cities in the US, cloudiest cities in the US, hottest cities in the US.

First and last freeze in Indianapolis

The first fall freeze in Indianapolis typically comes around October 20, and the last spring freeze around April 16. That leaves a frost-free growing season of about 187 days.

Indianapolis weather records

The hottest temperature on record at the Indianapolis station is 105°F, on July 6, 2012. The coldest is -27°F, on January 19, 1994.

The wettest day on record brought 7.2 in of rain, on September 1, 2003.

41 all-time records have been set at the station since 1970.

The annual mean temperature has changed by +0.6°F per decade since 1970.

The best time to visit Indianapolis

The most comfortable time to visit is typically April to May and September to October, when daytime highs sit near 70°F.

Winter (December–February) is cold, with average highs around 39°F and lows near 24°F. Snow is possible.

Spring (March–May) is mild, with average highs around 63°F and lows near 43°F.

Summer (June–August) is hot, with average highs around 84°F and lows near 65°F.

Autumn (September–November) is mild, with average highs around 65°F and lows near 46°F.

Indianapolis climate questions

How much rain does Indianapolis get?

Indianapolis gets 43.6 in of precipitation in an average year, over about 128 rainy days.

What is the wettest month in Indianapolis?

June is the wettest month in Indianapolis, with 5.0 in. February is the driest, with 2.4 in.

How many rainy days does Indianapolis have a year?

Indianapolis has about 128 days with measurable rain in an average year. May has the most, about 13.

Does it snow in Indianapolis?

Yes. Indianapolis gets about 25.5 in of snow in an average season. The snowiest winter on record is 1981–82, with 58.2 in.

What is the hottest month in Indianapolis?

July is the warmest month in Indianapolis, with an average high of 85°F.

What is the coldest month in Indianapolis?

January is the coldest month in Indianapolis, with an average low of 21°F.

What is the record high temperature in Indianapolis?

The record high at the Indianapolis station is 105°F, set on July 6, 2012. The record low is -27°F, on January 19, 1994.

What is the sunniest month in Indianapolis?

September is the sunniest month in Indianapolis, with sunshine about 56% of daylight hours. January is the cloudiest.

When is the first frost in Indianapolis?

The first fall freeze in Indianapolis typically comes around October 20. The last spring freeze is around April 16.

What is the best time to visit Indianapolis?

The most comfortable time to visit is typically April to May and September to October, when daytime highs sit near 70°F.