Indianapolis weather in October
October in Indianapolis: nice, rainy, with clean air — an excellent time to visit.
#4 of 12 months in Indianapolis · #358 of 897 destinations to visit in October · comfort 82/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Indianapolis in October
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Indianapolis climate normals — October
| Daytime high | 19°C / 66°F | 😎 nice |
|---|---|---|
| Nighttime low | 10°C / 50°F | |
| Rainfall | 90 mm / 3.5 in | 🌧 rainy |
| Rainy days | 11 days | |
| Humidity | 63% | 💧 humid |
| Dew point | 6°C / 43°F | |
| Sunshine | 7.4 h/day | |
| Daylight | 11.1 h | |
| Wind | 19 km/h / 12 mph | |
| Snowfall | 0.2 cm / 0.1 in | |
| Air quality (US AQI) | 33 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Indianapolis in October — FAQ
- Is October a good time to visit Indianapolis?
- October in Indianapolis: nice, rainy, with clean air — an excellent time to visit. It ranks #4 of 12 months for Indianapolis on SeasonMap's comfort score (82/100).
- What is the weather like in Indianapolis in October?
- In October, Indianapolis averages a daily high of 19°C and a low of 10.2°C, with about 89.8 mm of rain over roughly 11.2 rainy days.
- What is the air quality in Indianapolis in October?
- Indianapolis has a mean US Air Quality Index of about 33 in October.