Chelsea, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Chelsea, a city in Suffolk County, Massachusetts.
Overnight
63°F
Clear
Clear, with a low around 63. West wind around 6 mph.
7-day forecast for Chelsea
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Clear | 6 mph W | 0% |
| Tuesday | 85°F | Sunny | 7 mph W | 0% |
| Tuesday Night | 64°F | Partly Cloudy | 5 mph SW | 2% |
| Wednesday | 84°F | Mostly Sunny | 2 to 7 mph SW | 2% |
| Wednesday Night | 68°F | Partly Cloudy | 6 mph SW | 5% |
| Thursday | 88°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 8 mph SW | 15% |
| Thursday Night | 72°F | Slight Chance Rain Showers then Partly Cloudy | 7 mph SW | 19% |
| Friday | 90°F | Mostly Sunny then Slight Chance Rain Showers | 6 to 9 mph SW | 21% |
| Friday Night | 72°F | Chance Rain Showers then Partly Cloudy | 7 mph W | 30% |
| Saturday | 87°F | Mostly Sunny then Chance Rain Showers | 7 mph SW | 31% |
| Saturday Night | 71°F | Chance Rain Showers then Mostly Cloudy | 5 mph SW | 43% |
| Sunday | 88°F | Mostly Sunny | 3 to 7 mph W | 10% |
| Sunday Night | 71°F | Mostly Clear | 7 mph SW | 12% |
| Monday | 89°F | Sunny | 5 to 10 mph SW | 9% |
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 Aug 4, 2026.