Stony Brook University, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Stony Brook University, a community in Suffolk County, New York.
Today
71°F
Sunny
Sunny. High near 71, with temperatures falling to around 64 in the afternoon. South wind around 10 mph.
7-day forecast for Stony Brook University
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 71°F | Sunny | 10 mph S | 0% |
| Tonight | 58°F | Partly Cloudy | 3 to 8 mph S | 0% |
| Thursday | 71°F | Mostly Cloudy | 6 to 12 mph S | 7% |
| Thursday Night | 61°F | Showers And Thunderstorms Likely | 5 to 9 mph SW | 73% |
| Friday | 67°F | Showers And Thunderstorms | 6 mph S | 95% |
| Friday Night | 54°F | Showers And Thunderstorms | 3 mph W | 83% |
| Saturday | 63°F | Mostly Sunny | 5 to 8 mph NW | 13% |
| 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 | 12 to 15 mph W | 14% |
| Monday Night | 42°F | Mostly Clear | 12 mph W | 14% |
| Tuesday | 59°F | Sunny | 13 mph SW | 5% |
| Tuesday Night | 42°F | Mostly Clear | 12 mph W | 2% |
Forecast source: National Weather Service (api.weather.gov) for Stony Brook University (40.910, -73.122). Updated through the day.
Growing snapshot for Stony Brook University
Last spring frost
Apr 15
First fall frost
Nov 10
Growing season
208 days
Hardiness zone
7b
More local growing data for Stony Brook University: nearby ZIP 11790 weather · frost dates · planting calendar · New York frost dates
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Climate data from the nearest NOAA station, Setauket Strong, Ny (3.7 mi from Stony Brook University). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.