Frost dates in Unionville, MO
The average last spring frost in Unionville is around April 22 and the first fall frost is around October 14. That gives Unionville an average growing season of about 175 days.
Last spring frost
| Early (10% chance after) | April 10 |
|---|---|
| Average (50%) | April 22 |
| Late (90%) | May 6 |
First fall frost
| Early (10%) | September 29 |
|---|---|
| Average (50%) | October 14 |
| Late (90% chance before) | October 29 |