Typically, the average weather in Indianapolis during the month of August is 21 with highs being 29 with lows around 17 degrees. For more context we have put some more information below:
| Month | Degrees Celsius |
|---|---|
| Temperature | 21 |
| High Temperature | 29 |
| Low Temperature | 17 |
| Sunshine Per Day | 10 |
Useful Links: Indianapolis Weather: Average Weather & Yearly Climate