Indianapolis, Indiana, United States climate

Average temperatures, precipitation and all-time records for Indianapolis, Indiana, United States, with every day graded against ~45 years of local climate history (1981–2026). Its warmest month is July, averaging a high of 83°F, and its coldest is January, with an average low of 17°F.

Indianapolis, colloquially known as Indy, is the capital and most populous city of the U.S. state of Indiana and the county seat of Marion County. Indianapolis is situated in the state's central till plain region along the west fork of the White River. via Wikipedia

How today compares

Latest recorded day: 2026-07-21. Each reading placed on Indianapolis, Indiana, United States's own ±7-day seasonal distribution.

High 91°F Very High · 93rd pct

Low 73°F High · 90th pct

Feels-like 93°F Normal · 54th pct

Humidity 19.6 g/m³ High · 80th pct

Wind 16 mph Very High · 95th pct

Precip 0.00 in Dry

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Indianapolis average temperatures by month

Typical daily high and low, and average precipitation, for each month in Indianapolis, Indiana, United States, based on 1981–2026 records. The wettest month is June (0.20 in on an average day).

Month	Avg high	Avg low	Avg precip
January	33°F	17°F	0.10 in
February	39°F	21°F	0.10 in
March	50°F	30°F	0.10 in
April	62°F	40°F	0.10 in
May	71°F	51°F	0.10 in
June	80°F	61°F	0.20 in
July	83°F	65°F	0.20 in
August	83°F	63°F	0.10 in
September	79°F	56°F	0.10 in
October	65°F	43°F	0.10 in
November	51°F	32°F	0.10 in
December	38°F	23°F	0.10 in

Jan 1°–46°

Feb 6°–55°

Mar 20°–66°

Apr 28°–75°

May 40°–81°

Jun 52°–86°

Jul 58°–88°

Aug 55°–90°

Sep 46°–88°

Oct 33°–77°

Nov 22°–65°

Dec 9°–50°

Each bar spans the 10th-percentile daily low to the 90th-percentile daily high (the range most days fall within), coloured cold → hot on a shared -10°F to 115°F scale, so the whole year's rhythm reads at a glance.

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Record extremes

Hottest day on record: 104°F on 2012-07-07
Coldest day on record: -24°F on 1985-01-20

All Indianapolis weather records →

Percentiles compare each day to Indianapolis, Indiana, United States's own history, so grades are relative to this location: a “Near Record” day here isn't the same temperature as elsewhere. How the grades work →