Massachusetts Frost Dates
Across Massachusetts's 58 cities and towns, the average last spring frost runs from April 4 in Boston to May 10 in North Adams. Average last frost elsewhere: Worcester Apr 23 and Springfield May 3.
Frost dates for every city and town in Massachusetts
Dates are for 32°F at the NOAA station nearest the ZIP code at each Massachusetts town's center. "Safer date" is when only 1 year in 10 still gets a frost, a good target for tomatoes and peppers.
| City | Average last frost | Safer date | Average first frost | Frost-free days |
|---|---|---|---|---|
| Agawam Town | May 3 | May 17 | Oct 8 | 158 |
| Amesbury Town | May 1 | May 14 | Oct 12 | 164 |
| Amherst Town | May 5 | May 19 | Oct 8 | 156 |
| Attleboro | Apr 27 | May 10 | Oct 15 | 171 |
| Barnstable Town | Apr 16 | Apr 30 | Oct 30 | 197 |
| Beverly | May 4 | May 17 | Oct 12 | 161 |
| Boston | Apr 4 | Apr 17 | Nov 9 | 219 |
| Braintree Town | Apr 25 | May 8 | Oct 22 | 180 |
| Bridgewater Town | May 1 | May 15 | Oct 9 | 161 |
| Brockton | Apr 22 | May 5 | Oct 19 | 180 |
| Cambridge | Apr 19 | May 3 | Oct 23 | 187 |
| Chelsea | Apr 4 | Apr 17 | Nov 9 | 219 |
| Chicopee | May 3 | May 17 | Oct 8 | 158 |
| Easthampton Town | May 3 | May 17 | Oct 8 | 158 |
| Everett | Apr 4 | Apr 17 | Nov 9 | 219 |
| Fall River | Apr 11 | Apr 22 | Nov 2 | 205 |
| Fitchburg | May 1 | May 14 | Oct 9 | 161 |
| Framingham | Apr 26 | May 9 | Oct 12 | 169 |
| Franklin Town | Apr 30 | May 14 | Oct 9 | 162 |
| Gardner | May 2 | May 16 | Oct 13 | 164 |
| Gloucester | May 4 | May 17 | Oct 12 | 161 |
| Greenfield | May 1 | May 15 | Oct 11 | 163 |
| Haverhill | May 1 | May 14 | Oct 12 | 164 |
| Holyoke | May 3 | May 17 | Oct 8 | 158 |
| Lawrence | Apr 13 | Apr 29 | Oct 28 | 198 |
| Leominster | Apr 29 | May 13 | Oct 11 | 165 |
| Lowell | Apr 30 | May 10 | Oct 10 | 163 |
| Lynn | Apr 25 | May 13 | Oct 20 | 178 |
| Malden | Apr 4 | Apr 17 | Nov 9 | 219 |
| Marlborough | May 2 | May 16 | Oct 6 | 157 |
| Medford | Apr 4 | Apr 17 | Nov 9 | 219 |
| Melrose | Apr 25 | May 8 | Oct 17 | 175 |
| Methuen Town | Apr 13 | Apr 29 | Oct 28 | 198 |
| New Bedford | Apr 29 | May 15 | Oct 15 | 169 |
| Newburyport | May 3 | May 17 | Oct 8 | 158 |
| Newton | Apr 19 | May 3 | Oct 23 | 187 |
| North Adams | May 10 | May 25 | Oct 4 | 147 |
| North Attleborough Town | Apr 22 | May 6 | Oct 19 | 180 |
| Northampton | May 5 | May 19 | Oct 8 | 156 |
| Palmer Town | May 3 | May 16 | Oct 14 | 164 |
| Peabody | Apr 24 | May 6 | Oct 17 | 176 |
| Pittsfield | May 5 | May 21 | Oct 5 | 153 |
| Quincy | Apr 25 | May 8 | Oct 22 | 180 |
| Randolph Town | Apr 18 | Apr 30 | Oct 26 | 191 |
| Revere | Apr 4 | Apr 17 | Nov 9 | 219 |
| Salem | Apr 25 | May 13 | Oct 20 | 178 |
| Somerville | Apr 4 | Apr 17 | Nov 9 | 219 |
| Southbridge Town | Apr 25 | May 8 | Oct 13 | 171 |
| Springfield | May 3 | May 17 | Oct 8 | 158 |
| Taunton | Apr 22 | May 6 | Oct 19 | 180 |
| Waltham | Apr 28 | May 12 | Oct 10 | 165 |
| Watertown Town | Apr 19 | May 3 | Oct 23 | 187 |
| West Springfield Town | May 3 | May 17 | Oct 8 | 158 |
| Westfield | May 3 | May 17 | Oct 8 | 158 |
| Weymouth Town | Apr 25 | May 8 | Oct 22 | 180 |
| Winthrop Town | Apr 4 | Apr 17 | Nov 9 | 219 |
| Woburn | Apr 25 | May 8 | Oct 17 | 175 |
| Worcester | Apr 23 | May 5 | Oct 21 | 181 |
Source: NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020. City centers from the US Census Bureau. Click a city for its nearest station and, where it has frost dates, hard-freeze dates and a vegetable planting calendar. See how we calculate.
Frequently asked questions
When is the last frost in Boston, MA?
The average last spring frost in Boston is April 4, and only 1 year in 10 has a frost after April 17. The average first fall frost is November 9. These come from NOAA's 1991–2020 records at the Boston Logan INTL AP station.
When should I plant tomatoes in Massachusetts?
UNH Extension times tomato transplants for 1 to 2 weeks after the average last frost. In Boston that's about Apr 11 to Apr 18. Look up your ZIP code for your own dates and a full vegetable planting calendar.
More for Massachusetts: Massachusetts climate zones (insulation) · Massachusetts planting zones · Frost line depth by state