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Chelsea, MA Weather & Growing Conditions

Local forecast, frost dates, hardiness zone and planting guidance for Chelsea, a city in Suffolk County, Massachusetts.

This Afternoon
63°F
Mostly Sunny
Mostly sunny, with a high near 63. East wind around 8 mph.

7-day forecast for Chelsea

WhenTempForecastWindPrecip
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) 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

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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 20, 2026.