Head of the Harbor, NY Weather & Growing Conditions
This Afternoon
71°F
Sunny
Sunny. High near 71, with temperatures falling to around 64 in the afternoon. South wind around 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 71°F | Sunny | 10 mph S | 0% |
| Tonight | 59°F | Partly Cloudy | 7 mph S | 0% |
| Thursday | 70°F | Mostly Cloudy | 7 to 12 mph S | 7% |
| Thursday Night | 61°F | Showers And Thunderstorms Likely | 6 to 10 mph S | 73% |
| Friday | 67°F | Showers And Thunderstorms | 5 mph S | 95% |
| Friday Night | 55°F | Showers And Thunderstorms | 5 mph SW | 82% |
| Saturday | 64°F | Mostly Sunny | 5 to 8 mph NW | 12% |
| Saturday Night | 46°F | Slight Chance Light Rain | 10 mph W | 23% |
| Sunday | 58°F | Slight Chance Light Rain then Mostly Sunny | 10 mph W | 17% |
| Sunday Night | 43°F | Partly Cloudy | 10 mph W | 6% |
| Monday | 58°F | Sunny | 10 to 15 mph W | 13% |
| Monday Night | 42°F | Mostly Clear | 12 mph W | 13% |
| Tuesday | 59°F | Sunny | 13 mph SW | 4% |
| Tuesday Night | 43°F | Mostly Clear | 12 mph W | 2% |
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 Nov 4, 2026.