Frost dates in Harrisville, UT
The average last spring frost in Harrisville is around April 30 and the first fall frost is around October 18. That gives Harrisville an average growing season of about 171 days.
Last spring frost
| Early (10% chance after) | April 11 |
|---|---|
| Average (50%) | April 30 |
| Late (90%) | May 16 |
First fall frost
| Early (10%) | September 28 |
|---|---|
| Average (50%) | October 18 |
| Late (90% chance before) | November 4 |