Chelsea, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Chelsea, a city in Suffolk County, Massachusetts.
Overnight
53°F
Partly Cloudy
Partly cloudy, with a low around 53. North wind around 7 mph.
7-day forecast for Chelsea
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 53°F | Partly Cloudy | 7 mph N | 0% |
| Saturday | 64°F | Mostly Sunny | 8 mph NE | 0% |
| Saturday Night | 51°F | Partly Cloudy | 2 to 6 mph S | 0% |
| Sunday | 63°F | Mostly Cloudy then Rain Showers | 2 to 8 mph SE | 83% |
| Sunday Night | 53°F | Rain Showers | 5 to 10 mph E | 82% |
| Monday | 64°F | Slight Chance Rain Showers then Partly Sunny | 8 to 12 mph NE | 18% |
| Monday Night | 51°F | Mostly Cloudy | 3 to 9 mph NE | 1% |
| Tuesday | 61°F | Partly Sunny | 10 to 15 mph NE | 2% |
| Tuesday Night | 51°F | Mostly Cloudy | 7 to 13 mph NE | 2% |
| Wednesday | 62°F | Partly Sunny | 14 to 18 mph NE | 2% |
| Wednesday Night | 51°F | Mostly Cloudy then Slight Chance Rain Showers | 12 to 16 mph NE | 19% |
| Thursday | 61°F | Chance Rain Showers | 15 to 21 mph NE | 32% |
| Thursday Night | 51°F | Chance Rain Showers | 15 to 18 mph NE | 35% |
| Friday | 62°F | Chance Rain Showers | 16 to 21 mph NE | 36% |
Forecast source: National Weather Service (api.weather.gov) for Chelsea (42.397, -71.031). Updated through the day.
Growing snapshot for Chelsea
Last spring frost
Apr 4
First fall frost
Nov 9
Growing season
218 days
Hardiness zone
7a
More local growing data for Chelsea: nearby ZIP 02150 weather · frost dates · planting calendar · Massachusetts frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Boston Logan Intl Ap, Ma (2.7 mi from Chelsea). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.