Rainy days · Indiana
How often does it rain in Indianapolis?
Indianapolis rain laps the city about once every three days and never makes a pit stop.
Indianapolis gets measurable rain or snow on about 128 days a year, adding up to about 44 inches.
November usually brings Indianapolis about 10 wet days and 3.5 inches. The wettest month is usually May, with about 13 wet days, and the driest is September, with about 8 wet days. That makes Indianapolis number 36 of the 129 US cities we track, rainiest first.
Last updated
No rain in the forecast for the next 48 hours.
Live 48-hour check from OpenWeatherMap, refreshed about every half hour. Alerts from the National Weather Service.
Rainy days, month by month
| Month | Wet days | Inches |
|---|---|---|
| January | 12 | 3.1 |
| February | 10 | 2.4 |
| March | 12 | 3.7 |
| April | 12 | 4.3 |
| May | 13 | 4.8 |
| June | 12 | 5.0 |
| July | 10 | 4.4 |
| August | 8 | 3.2 |
| September | 8 | 3.1 |
| October | 9 | 3.2 |
| November | 10 | 3.5 |
| December | 12 | 2.9 |
Cities with about as many rainy days
- Boston, Massachusetts: about 128 wet days a year
- Knoxville, Tennessee: about 129 wet days a year
- Louisville, Kentucky: about 127 wet days a year
Source: NOAA daily precipitation records for the Indianapolis area, 1991 to 2020 (at least 30 complete years behind every month), via the Applied Climate Information System. A wet day here means at least a hundredth of an inch of rain or melted snow.