Seabrook Beach, NH Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Seabrook Beach, a community in Rockingham County, New Hampshire.
Overnight
52°F
Partly Cloudy
Partly cloudy, with a low around 52. North wind around 5 mph.
7-day forecast for Seabrook Beach
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 52°F | Partly Cloudy | 5 mph N | 0% |
| Saturday | 61°F | Sunny | 5 mph NE | 0% |
| Saturday Night | 48°F | Partly Cloudy | 0 to 5 mph S | 0% |
| Sunday | 61°F | Mostly Cloudy then Rain | 0 to 10 mph S | 88% |
| Sunday Night | 49°F | Rain | 5 to 10 mph NE | 87% |
| Monday | 62°F | Mostly Sunny | 5 to 10 mph NE | 10% |
| Monday Night | 48°F | Mostly Cloudy | 5 to 10 mph NE | 0% |
| Tuesday | 59°F | Partly Sunny | 5 to 10 mph NE | 1% |
| Tuesday Night | 48°F | Mostly Cloudy | 5 to 10 mph NE | 1% |
| Wednesday | 60°F | Mostly Sunny | 10 to 15 mph NE | 1% |
| Wednesday Night | 48°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 10 mph NE | 15% |
| Thursday | 59°F | Chance Rain Showers | 10 to 15 mph NE | 31% |
| Thursday Night | 48°F | Chance Rain Showers | 10 to 15 mph NE | 33% |
| Friday | 60°F | Chance Rain Showers | 15 to 20 mph NE | 33% |
Forecast source: National Weather Service (api.weather.gov) for Seabrook Beach (42.881, -70.825). Updated through the day.
Growing snapshot for Seabrook Beach
Last spring frost
May 4
First fall frost
Oct 8
Growing season
157 days
Hardiness zone
6b
More local growing data for Seabrook Beach: nearby ZIP 03874 weather · frost dates · planting calendar · New Hampshire frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Greenland, Nh (9.7 mi from Seabrook Beach). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.