Last frost date in Ankeny, Iowa
April 23
Average last frost in spring. In an early year (1 in 10) it's over by April 8; in a late year (1 in 10) it comes after May 6.
October 15
Average first frost in fall. 1 year in 10 it comes by September 30.
Source: NOAA U.S. Climate Normals 1991–2020, station Ankeny (USC00130241), 2.5 miles from Ankeny, elevation 975 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
This station is also the nearest one for Altoona, so its frost dates are the same as Ankeny's.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Apr 8 | Apr 23 | May 6 |
| First frost in fall | Sept 30 | Oct 15 | Oct 28 |
Frost-free days in an average year: 173
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | May 3 | Oct 4 |
| Frost (32°F) | Every year | Apr 23 | Oct 15 |
| Hard freeze (28°F) | Every year | Apr 13 | Oct 25 |
Nights at 32°F or colder in an average year: 150
What to plant now in Ankeny
- Spring planting calendar for an average last frost around April 20 Ankeny: April 23
- Fall planting calendar for an average first frost around October 10 Ankeny: October 15
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 Iowa
- Des Moines 11 mi · last frost Apr 18
- Urbandale 11 mi · last frost Apr 19
- Ames 20 mi · last frost Apr 26
- Indianola 25 mi · last frost Apr 24
- Boone 26 mi · last frost Apr 28
Updated