Ankeny, IA Frost Dates
The last spring frost in Ankeny usually comes around April 18 and the first fall frost around October 20.
| Spring (last) | Fall (first) | |
|---|---|---|
| Frost, 32°F | April 18 | October 20 |
| Hard freeze, 28°F | April 8 | October 30 |
Growing season: about 184 days.
Frequently asked questions
When is the last frost in Ankeny, IA?
The median date of the last spring frost (32°F) is April 18. In half of years the last frost comes earlier and in half it comes later, so waiting a week or two past April 18 lowers the risk for tender plants.
When is the first frost in Ankeny?
The median date of the first fall frost (32°F) is October 20, and a hard freeze (28°F) usually follows around October 30.
How long is the growing season in Ankeny?
About 184 days between the median last spring frost and first fall frost.
NOAA NCEI U.S. Climate Normals 1991-2020, station USW00014933. Median (50% probability) dates. Low spots and valleys can frost later in spring and earlier in fall than the station.