Frost dates in Fitchburg, MA
The average last spring frost in Fitchburg is around April 26 and the first fall frost is around October 9. That gives Fitchburg an average growing season of about 166 days.
Last spring frost
| Early (10% chance after) | April 14 |
|---|---|
| Average (50%) | April 26 |
| Late (90%) | May 16 |
First fall frost
| Early (10%) | September 11 |
|---|---|
| Average (50%) | October 9 |
| Late (90% chance before) | October 28 |