Frost dates in Somersworth, NH
The average last spring frost in Somersworth is around May 3 and the first fall frost is around October 14. That gives Somersworth an average growing season of about 164 days.
Last spring frost
| Early (10% chance after) | April 20 |
|---|---|
| Average (50%) | May 3 |
| Late (90%) | May 15 |
First fall frost
| Early (10%) | October 3 |
|---|---|
| Average (50%) | October 14 |
| Late (90% chance before) | October 23 |