Indianapolis Temperatures: Averages by Month
The numbers here tell you how hot and cold the weather usually is in Indianapolis, Indiana during each month of the year.
The average high and low temperatures are listed below monthly and annually for the city, in both degrees Fahrenheit and Celsius.
Maximums and minimums are only part of the temperature picture. To fill in the rest, there's information on how many days a month get above or below a given temperature.
To find out how often it rises over 70, 80 or 90 °F each month in Indianapolis, scroll down farther. There are also monthly and yearly counts of days with cold weather.
All the numbers are long-term historical averages based on climate data gathered from 1981 to 2010.
|High °F||Low °F||High °C||Low °C|
Days of Hot Weather in Indianapolis
Indianapolis typically gets two weeks of high temperatures spread out across the summer. On those days, highs peak in the 90s Fahrenheit. Only once a decade on average does the thermometer climb into the 100s F (over 38 °C).
How Often Indianapolis Has Cold Temperatures
The coldest nights at Indianapolis drop down to 0 °F (-18 °C) or below. The city averages four nights a winter with temperatures that chilly.
Indianapolis typically sees 29 days annually when the thermometer doesn't rise above 32 °F (0 °C). Frosty days can happen anytime from fall until late winter.
National Climatic Data Center. NOAA's 1981-2010 Climate Normals.