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.
Today
83°F
Sunny
Sunny, with a high near 83. Southwest wind 5 to 10 mph.
7-day forecast for Seabrook Beach
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Sunny | 5 to 10 mph SW | 0% |
| Tonight | 62°F | Mostly Clear | 5 to 10 mph SW | 0% |
| Wednesday | 81°F | Partly Sunny | 0 to 5 mph S | 0% |
| Wednesday Night | 67°F | Partly Cloudy | 5 mph SW | 6% |
| Thursday | 85°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 5 mph SW | 28% |
| Thursday Night | 70°F | Chance Showers And Thunderstorms then Mostly Clear | 5 mph SW | 25% |
| Friday | 87°F | Sunny then Slight Chance Showers And Thunderstorms | 5 mph SW | 25% |
| Friday Night | 69°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 mph SW | 25% |
| Saturday | 84°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph SW | 48% |
| Saturday Night | 68°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 5 mph SW | 43% |
| Sunday | 86°F | Sunny | 5 mph SW | 10% |
| Sunday Night | 69°F | Mostly Clear | 5 mph SW | 10% |
| Monday | 87°F | Sunny | 5 to 10 mph SW | 13% |
| Monday Night | 67°F | Slight Chance Rain Showers | 5 to 10 mph W | 16% |
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 Aug 4, 2026.