Last frost date in Indianapolis, Indiana
April 20
Average last frost in spring. In an early year (1 in 10) it's over by April 6; in a late year (1 in 10) it comes after May 5.
October 21
Average first frost in fall. 1 year in 10 it comes by October 7.
Source: NOAA U.S. Climate Normals 1991–2020, station Indianapolis SE Side (USC00124272), 5.9 miles from Indianapolis, elevation 845 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
This station is also the nearest one for Beech Grove and Greenwood, so their frost dates are the same as Indianapolis's.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 6 | Apr 20 | May 5 |
| First frost in fall | Oct 7 | Oct 21 | Nov 3 |
Frost-free days in an average year: 183
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | Apr 30 | Oct 11 |
| Frost (32°F) | Every year | Apr 20 | Oct 21 |
| Hard freeze (28°F) | Every year | Apr 7 | Nov 1 |
Nights at 32°F or colder in an average year: 120
What to plant now in Indianapolis
- Spring planting calendar for an average last frost around April 20 Indianapolis: April 20
- Fall planting calendar for an average first frost around October 20 Indianapolis: October 21
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), “Suburban and Farm Vegetable Gardens,” tables 4 and 5. How we match the table.
Nearby in Indiana
- Lawrence 10 mi · last frost Apr 18
- Plainfield 13 mi · last frost Apr 12
- Brownsburg 13 mi · last frost Apr 12
- Fishers 16 mi · last frost Apr 21
- Zionsville 18 mi · last frost Apr 21
Updated