Chelsea, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Chelsea, a city in Suffolk County, Massachusetts.
Tonight
54°F
Partly Cloudy
Partly cloudy, with a low around 54. Southwest wind around 6 mph.
7-day forecast for Chelsea
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Partly Cloudy | 6 mph SW | 4% |
| Wednesday | 76°F | Mostly Sunny | 6 to 12 mph SW | 5% |
| Wednesday Night | 58°F | Partly Cloudy | 6 to 9 mph SW | 3% |
| Thursday | 74°F | Mostly Cloudy | 6 to 12 mph SW | 13% |
| Thursday Night | 62°F | Mostly Cloudy then Chance Light Rain | 6 to 9 mph SW | 54% |
| Friday | 70°F | Rain | 7 mph S | 84% |
| Friday Night | 56°F | Rain | 6 mph S | 84% |
| Saturday | 63°F | Light Rain | 8 mph NW | 76% |
| Saturday Night | 46°F | Chance Light Rain | 7 mph NW | 49% |
| Sunday | 60°F | Chance Light Rain | 6 to 9 mph W | 25% |
| Sunday Night | 41°F | Partly Cloudy | 6 mph W | 11% |
| Monday | 58°F | Slight Chance Light Rain | 7 to 13 mph W | 21% |
| Monday Night | 39°F | Slight Chance Light Rain | 9 mph W | 21% |
| Tuesday | 58°F | Mostly Sunny | 9 to 14 mph W | 12% |
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 Nov 4, 2026.