Head of the Harbor, NY Weather & Growing Conditions
This Afternoon
69°F
Partly Sunny
Partly sunny. High near 69, with temperatures falling to around 67 in the afternoon. East wind around 9 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 69°F | Partly Sunny | 9 mph E | 0% |
| Tonight | 56°F | Partly Cloudy | 7 mph SE | 2% |
| Sunday | 71°F | Rain | 7 to 12 mph SE | 86% |
| Sunday Night | 57°F | Rain | 7 to 13 mph SE | 86% |
| Monday | 68°F | Chance Light Rain then Mostly Cloudy | 9 to 15 mph NE | 41% |
| Monday Night | 55°F | Mostly Cloudy then Slight Chance Rain Showers | 9 to 15 mph NE | 21% |
| Tuesday | 65°F | Chance Rain Showers | 16 mph NE | 25% |
| Tuesday Night | 53°F | Chance Rain Showers | 15 to 20 mph NE | 25% |
| Wednesday | 66°F | Slight Chance Rain Showers | 22 mph NE | 19% |
| Wednesday Night | 53°F | Chance Rain Showers | 22 mph NE | 33% |
| Thursday | 65°F | Chance Rain Showers | 22 mph NE | 33% |
| Thursday Night | 52°F | Chance Rain Showers | 21 mph NE | 40% |
| Friday | 65°F | Chance Rain Showers | 21 mph N | 37% |
| Friday Night | 53°F | Chance Rain Showers | 18 to 22 mph N | 37% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Head of the Harbor, NY
Last spring frost
Apr 15
First fall frost
Nov 10
Growing season
208 days
Hardiness zone
7b
Explore more for Head of the Harbor, NY: full frost dates · planting calendar · New York frost dates
Climate data from the nearest NOAA station, Setauket Strong, Ny (4.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.