Frost dates in Fillmore, UT
The average last spring frost in Fillmore is around May 14 and the first fall frost is around October 3. That gives Fillmore an average growing season of about 142 days.
Last spring frost
| Early (10% chance after) | April 21 |
|---|---|
| Average (50%) | May 14 |
| Late (90%) | June 4 |
First fall frost
| Early (10%) | September 17 |
|---|---|
| Average (50%) | October 3 |
| Late (90% chance before) | October 24 |