Frost dates in Ames, IA
The average last spring frost in Ames is around April 24 and the first fall frost is around October 9. That gives Ames an average growing season of about 168 days.
Last spring frost
| Early (10% chance after) | April 12 |
|---|---|
| Average (50%) | April 24 |
| Late (90%) | May 6 |
First fall frost
| Early (10%) | September 24 |
|---|---|
| Average (50%) | October 9 |
| Late (90% chance before) | October 17 |