Frost dates in Oswego, NY
The average last spring frost in Oswego is around April 24 and the first fall frost is around October 24. That gives Oswego an average growing season of about 183 days.
Last spring frost
| Early (10% chance after) | April 12 |
|---|---|
| Average (50%) | April 24 |
| Late (90%) | May 9 |
First fall frost
| Early (10%) | October 8 |
|---|---|
| Average (50%) | October 24 |
| Late (90% chance before) | November 8 |