Frost dates in Lebanon, NH
The average last spring frost in Lebanon is around May 14 and the first fall frost is around October 6. That gives Lebanon an average growing season of about 145 days.
Last spring frost
| Early (10% chance after) | May 4 |
|---|---|
| Average (50%) | May 14 |
| Late (90%) | June 1 |
First fall frost
| Early (10%) | September 20 |
|---|---|
| Average (50%) | October 6 |
| Late (90% chance before) | October 18 |