Seabrook, MA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Seabrook, a community in Barnstable County, Massachusetts.
This Afternoon
63°F
Mostly Sunny
Mostly sunny, with a high near 63. Northeast wind around 9 mph.
7-day forecast for Seabrook
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 63°F | Mostly Sunny | 9 mph NE | 0% |
| Tonight | 55°F | Partly Cloudy | 6 mph E | 0% |
| Sunday | 66°F | Mostly Cloudy then Rain Showers Likely | 6 to 10 mph SE | 68% |
| Sunday Night | 57°F | Showers And Thunderstorms | 7 to 13 mph SE | 83% |
| Monday | 64°F | Chance Rain Showers then Mostly Cloudy | 13 to 16 mph N | 42% |
| Monday Night | 55°F | Mostly Cloudy | 9 to 13 mph NE | 3% |
| Tuesday | 62°F | Mostly Cloudy | 15 mph NE | 7% |
| Tuesday Night | 55°F | Mostly Cloudy | 15 to 18 mph NE | 4% |
| Wednesday | 63°F | Partly Sunny | 21 mph NE | 6% |
| Wednesday Night | 55°F | Chance Rain Showers | 20 to 24 mph NE | 25% |
| Thursday | 63°F | Chance Rain Showers | 25 mph NE | 37% |
| Thursday Night | 55°F | Chance Rain Showers | 24 mph NE | 42% |
| Friday | 63°F | Chance Rain Showers | 23 to 28 mph N | 42% |
| Friday Night | 55°F | Chance Rain Showers | 26 mph NE | 46% |
Forecast source: National Weather Service (api.weather.gov) for Seabrook (41.585, -70.498). Updated through the day.
Growing snapshot for Seabrook
Last spring frost
Apr 26
First fall frost
Oct 26
Growing season
180 days
Hardiness zone
7a
More local growing data for Seabrook: nearby ZIP 02649 weather · frost dates · planting calendar · Massachusetts frost dates
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Harwich Center
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Climate data from the nearest NOAA station, E Sandwich, Ma (6.8 mi from Seabrook). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.