Frost dates in Montrose, IA
The average last spring frost in Montrose is around April 14 and the first fall frost is around October 21. That gives Montrose an average growing season of about 190 days.
Last spring frost
| Early (10% chance after) | March 27 |
|---|---|
| Average (50%) | April 14 |
| Late (90%) | April 30 |
First fall frost
| Early (10%) | October 7 |
|---|---|
| Average (50%) | October 21 |
| Late (90% chance before) | November 5 |