Frost dates in Amboy, MN
The average last spring frost in Amboy is around April 30 and the first fall frost is around October 4. That gives Amboy an average growing season of about 157 days.
Last spring frost
| Early (10% chance after) | April 15 |
|---|---|
| Average (50%) | April 30 |
| Late (90%) | May 17 |
First fall frost
| Early (10%) | September 15 |
|---|---|
| Average (50%) | October 4 |
| Late (90% chance before) | October 18 |