Indianapolis Weather History
Indiana · US States · Weather data 1976–today
Indianapolis sits 4427km from the equator, 218m above sea level. That combination gives it a climate with hot, humid summers, mild winters, and rain year round (Humid subtropical climate). Its record high is 38.6°C, set 2012-06-28, its record low -33.5°C, set 1994-01-19.
Data through August 4, 2026.
Frequently asked questions about the weather in Indianapolis
What is the hottest temperature ever recorded in Indianapolis?
The highest temperature in this record for Indianapolis is 38.6°C, measured on 2012-06-28. That is a recorded daily value from Indianapolis's own series covering 1976 to 2025, not an estimate or a regional average.
What is the coldest temperature ever recorded in Indianapolis?
The lowest temperature in this record for Indianapolis is -33.5°C, measured on 1994-01-19. Together with the heat record above, that spans the full range this city has actually experienced across 1976 to 2025.
How much rain does Indianapolis get a year?
Indianapolis averages 1081mm of precipitation a year, spread across roughly 123 days with at least 1mm. That average is taken over 50 complete calendar years, so one exceptionally wet or dry year does not set the figure.
What was the wettest day on record in Indianapolis?
On 2003-09-01, 126.5mm fell on Indianapolis, the highest single-day total in this series. For scale, that is roughly 12% of what the city receives in an average full year, in one day.
How many hours of sunshine does Indianapolis get a year?
Indianapolis averages 3157 sunshine hours a year, which works out to about 8.6 hours a day across the whole year. Sunshine hours measure the time direct sunlight actually reaches the ground, not simply how long it is light.
How warm are summers and how cold are winters in Indianapolis?
Across the summer months Indianapolis averages a daytime high near 28°C, while winter nights average -4.7°C. The seasons here are set from Indianapolis's position relative to the equator rather than a fixed northern-hemisphere calendar.
What is the strongest wind recorded in Indianapolis?
The strongest wind speed recorded in Indianapolis is 48 km/h, on 2024-09-27. That is the daily maximum sustained wind rather than the peak gust, which typically runs higher still.
