Frost dates in Donnellson, IA
The average last spring frost in Donnellson is around April 20 and the first fall frost is around October 25. That gives Donnellson an average growing season of about 188 days.
Last spring frost
| Early (10% chance after) | April 8 |
|---|---|
| Average (50%) | April 20 |
| Late (90%) | April 28 |
First fall frost
| Early (10%) | October 12 |
|---|---|
| Average (50%) | October 25 |
| Late (90% chance before) | October 31 |