Indianapolis - Recent August Temperatures and Rainfall

The numbers here describe what the August weather in Indianapolis, Indiana was like for every year since 2010. A series of tables gives August data by year for temperature and precipitation.

They begin with average maximum and minimum temperatures in degrees Fahrenheit and Celsius. That's followed by how many really hot days occurred each August. Then there's information on how much rain actually landed this month during recent years, as well as how often Indianapolis had wet weather.

The climate data come from weather measurements made at Indianapolis International Airport.

Temperature Weather iconTemperature

August temperature averages by year in Indianapolis
High °F Low °F Year High °C Low °C
84 65 2023 29 19
85 66 2022 29 19
87 68 2021 31 20
84 65 2020 29 18
84 65 2019 29 19
85 67 2018 29 20
83 63 2017 28 17
86 70 2016 30 21
83 63 2015 28 17
83 65 2014 28 18
85 65 2013 29 18
86 64 2012 30 18
88 66 2011 31 19
90 69 2010 32 20
Number of days in August when the temperature in Indianapolis rose to at least 70 or 90 degrees Fahrenheit
Year 70 °F
21 °C
90 °F
32 °C
2023 31 6
2022 31 6
2021 31 11
2020 31 3
2019 31 3
2018 31 6
2017 31 2
2016 31 12
2015 31 0
2014 31 2
2013 31 6
2012 31 8
2011 31 12
2010 31 16

Rainy Weather iconRain

This table gives the total precipitation that fell on Indianapolis during August in each year from 2010. The number of days with precipitation counts the days when rainfall amounted to 0.01 inches (0.3 millimeters) or more.

Total rainfall for August in Indianapolis
Days Year Inches Milli­metres
9 2023 3.0 75
9 2022 4.4 113
10 2021 2.0 51
5 2020 2.1 53
10 2019 3.5 90
10 2018 4.3 108
9 2017 1.8 45
10 2016 7.3 186
6 2015 1.6 39
14 2014 3.0 75
4 2013 1.2 29
8 2012 6.5 165
8 2011 1.1 28
4 2010 0.4 9
Reference

Jay Lawrimore. 2016. Global Summary of the Month, Version 1.0. NOAA National Centers for Environmental Information. 

Indianapolis - Recent Years
Indianapolis - Extremes
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