Stony Brook, NY Weather & Growing Conditions
Tonight
53°F
Patchy Fog
Patchy fog after 11pm. Partly cloudy, with a low around 53. Southwest wind around 6 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 53°F | Patchy Fog | 6 mph SW | 3% |
| Wednesday | 70°F | Patchy Fog then Sunny | 3 to 10 mph SW | 3% |
| Wednesday Night | 58°F | Partly Cloudy | 5 to 8 mph S | 2% |
| Thursday | 70°F | Slight Chance Rain Showers | 5 to 10 mph S | 19% |
| Thursday Night | 60°F | Rain Showers | 6 to 9 mph SW | 84% |
| Friday | 67°F | Showers And Thunderstorms | 7 mph S | 91% |
| Friday Night | 55°F | Showers And Thunderstorms | 6 mph W | 91% |
| Saturday | 64°F | Rain Showers Likely | 8 mph NW | 60% |
| Saturday Night | 45°F | Slight Chance Rain Showers | 9 mph NW | 21% |
| Sunday | 59°F | Slight Chance Rain Showers then Mostly Sunny | 9 mph W | 19% |
| Sunday Night | 43°F | Partly Cloudy | 7 to 10 mph W | 14% |
| Monday | 58°F | Chance Light Rain | 10 to 15 mph NW | 26% |
| Monday Night | 42°F | Chance Light Rain | 13 mph W | 26% |
| Tuesday | 59°F | Slight Chance Light Rain then Mostly Sunny | 15 mph W | 19% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Stony Brook, NY
Last spring frost
Apr 15
First fall frost
Nov 10
Growing season
208 days
Hardiness zone
7b
Explore more for Stony Brook, NY: full frost dates · planting calendar · New York frost dates
Climate data from the nearest NOAA station, Setauket Strong, Ny (3.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.