Frost dates for Boston, Massachusetts
In a typical year, Boston’s last spring frost lands around Apr 4 and the first fall frost around Nov 9, a growing season of about 219 days. These are odds drawn from 30-year NOAA climate normals, not a promise. USDA zone 7a.
| Odds | Last spring frost | First fall frost |
|---|---|---|
| 10 percent | Mar 25 | Oct 29 |
| 50 percent | Apr 4 | Nov 9 |
| 90 percent | Apr 17 | Nov 22 |
A 10 percent year is an early year, a 90 percent year a late one. Frost-sensitive planting usually waits for the 90 percent side of the last-frost band.
Soil in Boston is typically around 72°F at 4 inches this time of year, estimated from the last two weeks of normal air temperatures.
Plantable now in Boston
- Dill (Bouquet)
- Turnip (Purple Top White Globe)
- Cilantro (Santo)
- Sweet alyssum (Snow Crystals)
- Mâche (Vit)
- Arugula (Wild Sylvetta)
- Lettuce (Buttercrunch)
- Swiss chard (Bright Lights)
Timing comes from the same temperature engine the app uses, run against Boston’s normals for today.
Nearby cities
- Cambridge, MA (around Apr 19 to Oct 23)
- Lowell, MA (around Apr 30 to Oct 10)
- Nashua, NH (around Apr 30 to Oct 12)
- Pawtucket, RI (around Apr 11 to Oct 30)
- Worcester, MA (around Apr 23 to Oct 21)
Row & Bed is a plant reference built around your garden: your zone, your frost dates, your forecast, and a cited page for every variety in your beds.
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