Frost dates in Mapleton, UT
The average last spring frost in Mapleton is around May 1 and the first fall frost is around October 16. That gives Mapleton an average growing season of about 168 days.
Last spring frost
| Early (10% chance after) | April 12 |
|---|---|
| Average (50%) | May 1 |
| Late (90%) | May 19 |
First fall frost
| Early (10%) | September 25 |
|---|---|
| Average (50%) | October 16 |
| Late (90% chance before) | November 1 |