Chelsea, MA Weather & Growing Conditions
This Afternoon
63°F
Mostly Sunny
Mostly sunny, with a high near 63. East wind around 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 63°F | Mostly Sunny | 8 mph E | 0% |
| Tonight | 49°F | Partly Cloudy | 3 to 7 mph SE | 0% |
| Sunday | 62°F | Rain Showers | 3 to 10 mph SE | 100% |
| Sunday Night | 54°F | Rain Showers | 6 to 12 mph NE | 99% |
| Monday | 66°F | Slight Chance Rain Showers then Partly Sunny | 7 to 12 mph NE | 23% |
| Monday Night | 52°F | Mostly Cloudy | 3 to 9 mph NE | 1% |
| Tuesday | 62°F | Partly Sunny | 9 to 13 mph NE | 2% |
| Tuesday Night | 52°F | Partly Cloudy | 6 to 12 mph NE | 1% |
| Wednesday | 63°F | Mostly Sunny | 12 to 17 mph NE | 2% |
| Wednesday Night | 51°F | Mostly Cloudy then Slight Chance Rain Showers | 10 to 15 mph NE | 15% |
| Thursday | 63°F | Slight Chance Rain Showers | 15 to 18 mph NE | 24% |
| Thursday Night | 52°F | Chance Rain Showers | 14 to 17 mph NE | 37% |
| Friday | 63°F | Chance Rain Showers | 17 to 21 mph NE | 43% |
| Friday Night | 52°F | Chance Rain Showers | 16 to 20 mph N | 45% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Chelsea, MA
Last spring frost
Apr 4
First fall frost
Nov 9
Growing season
218 days
Hardiness zone
7a
Explore more for Chelsea, MA: full frost dates · planting calendar · Massachusetts frost dates
Climate data from the nearest NOAA station, Boston Logan Intl Ap, Ma (2.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.