North Sea, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for North Sea, a community in Suffolk County, New York.
Tonight
59°F
Mostly Cloudy
Mostly cloudy, with a low around 59. Southeast wind around 6 mph.
7-day forecast for North Sea
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 59°F | Mostly Cloudy | 6 mph SE | 1% |
| Sunday | 71°F | Rain Showers Likely then Rain | 6 to 12 mph SE | 81% |
| Sunday Night | 59°F | Rain then Rain Showers | 7 to 14 mph SW | 87% |
| Monday | 68°F | Chance Rain Showers | 10 to 15 mph NE | 48% |
| Monday Night | 58°F | Slight Chance Rain Showers | 10 to 15 mph NE | 20% |
| Tuesday | 66°F | Chance Rain Showers | 16 mph NE | 26% |
| Tuesday Night | 56°F | Slight Chance Rain Showers then Mostly Cloudy | 15 to 18 mph NE | 24% |
| Wednesday | 67°F | Slight Chance Rain Showers | 20 to 23 mph NE | 15% |
| Wednesday Night | 56°F | Slight Chance Rain Showers | 20 to 23 mph NE | 24% |
| Thursday | 66°F | Chance Rain Showers | 21 to 25 mph NE | 34% |
| Thursday Night | 55°F | Chance Rain Showers | 21 to 25 mph NE | 43% |
| Friday | 66°F | Chance Rain Showers | 22 to 25 mph NE | 45% |
| Friday Night | 56°F | Chance Rain Showers | 20 to 24 mph N | 45% |
| Saturday | 68°F | Chance Rain Showers | 15 to 24 mph N | 32% |
Forecast source: National Weather Service (api.weather.gov) for North Sea (40.932, -72.406). Updated through the day.
Growing snapshot for North Sea
Last spring frost
Apr 19
First fall frost
Nov 1
Growing season
196 days
Hardiness zone
7a
More local growing data for North Sea: nearby ZIP 11968 weather · frost dates · planting calendar · New York frost dates
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Climate data from the nearest NOAA station, Mattituck, Ny (7.4 mi from North Sea). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.