Frost dates in Castle Dale, UT
The average last spring frost in Castle Dale is around May 24 and the first fall frost is around September 23. That gives Castle Dale an average growing season of about 122 days.
Last spring frost
| Early (10% chance after) | May 3 |
|---|---|
| Average (50%) | May 24 |
| Late (90%) | June 16 |
First fall frost
| Early (10%) | September 11 |
|---|---|
| Average (50%) | September 23 |
| Late (90% chance before) | October 9 |