Best time to visit · Indiana
Best time to visit Indianapolis
Indianapolis averages 22 just-right days a year; no month is reliably just right, and September comes closest. Most other days miss by being too cool.
(70 to 80°F, dry, sunny)
(45 to 65°F, dry)
(80 to 92°F, bright)
Indianapolis weather by month
Bars: share of each month's days that are just right (number = days). Below: average daily high. Outlined bars are the best months.
- Just right 22
- Too cool 213
- Too hot 86
- Too muggy 23
- Too gray 21
When to visit Indianapolis
Indianapolis rarely hits the 70 to 80°F, dry and sunny window; September comes closest, with 6 just-right days. January, February, March, April, November and December are mostly too cool, with average highs of 36 to 64°F. June, July and August are mostly too hot, with average highs of 82 to 85°F.
Climate table
| Month | Avg high | Dew point | Cloud cover | Just-right days |
|---|---|---|---|---|
| January | 36°F | 28°F | 78% | 0 |
| February | 40°F | 28°F | 77% | 0 |
| March | 51°F | 33°F | 70% | 0 |
| April | 64°F | 42°F | 65% | 2 |
| May | 73°F | 54°F | 62% | 5 |
| June | 82°F | 62°F | 52% | 2 |
| July | 85°F | 65°F | 46% | 1 |
| August | 84°F | 64°F | 44% | 1 |
| September | 79°F | 55°F | 46% | 6 |
| October | 66°F | 45°F | 56% | 4 |
| November | 52°F | 36°F | 71% | 0 |
| December | 40°F | 28°F | 81% | 0 |
How Indianapolis compares
With 22 just-right days, Indianapolis trails the median of America's 150 largest cities (33 days). On muggy days: 23. On gray days: 21.
Places with a similar climate
Nearby
Indianapolis averages 22 just-right days a year (70 to 80°F highs, dry, mostly sunny), according to Goldilocks Map: https://goldilocksmap.com/us/indiana/indianapolis/Set your own perfect weather on the map →
Numbers are expected days in a typical year from 1991 to 2020 climate normals (TerraClimate; cloud cover from CHELSA), on a grid about 35 km wide. Checked against 10 years of daily records at 28 NOAA weather stations: typical error about 10 days a year. How it works. Updated 2026-10-07.