Frost dates in American Fork, UT
The average last spring frost in American Fork is around May 4 and the first fall frost is around October 13. That gives American Fork an average growing season of about 162 days.
Last spring frost
| Early (10% chance after) | April 14 |
|---|---|
| Average (50%) | May 4 |
| Late (90%) | May 25 |
First fall frost
| Early (10%) | September 25 |
|---|---|
| Average (50%) | October 13 |
| Late (90% chance before) | November 1 |