Weather in Indianapolis, Indiana, United States in September
In an average September, Indianapolis sees a daily high around 79°F and a low around 56°F, based on 1981–2026 of local climate records.
| Average high | 79°F |
|---|---|
| Typical high range | 68°F to 88°F |
| Average low | 56°F |
| Typical low range | 46°F to 66°F |
| Average daily precipitation | 0.10 in |
September records
The most extreme September on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
97°F
2013-09-10
Lowest
54°F
2000-09-25
Low
Highest
72°F
2013-09-10
Lowest
32°F
1995-09-23
Feels-like
Highest
126°F
2013-09-10
Lowest
24°F
1995-09-23
Humidity
Highest
20.7 g/m³
2016-09-07
Lowest
4.4 g/m³
1995-09-23
Wind
Highest
34 mph
2024-09-27
Lowest
4 mph
2022-09-14
Precip
Wettest
6.51 in
1989
Driest
0.80 in
2004
See Indianapolis's live weather grade →
Visiting Indianapolis in September? See how its comfort stacks up against where you live.
Compare Indianapolis with your city →