Brookhaven, NY Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Brookhaven, a community in Suffolk County, New York.
Tonight
54°F
Patchy Fog
Patchy fog after 11pm. Partly cloudy, with a low around 54. Southwest wind around 5 mph.
7-day forecast for Brookhaven
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Patchy Fog | 5 mph SW | 3% |
| Wednesday | 69°F | Patchy Fog then Sunny | 3 to 12 mph SW | 3% |
| Wednesday Night | 59°F | Partly Cloudy | 7 mph SW | 1% |
| Thursday | 68°F | Mostly Cloudy then Slight Chance Rain Showers | 6 to 12 mph S | 16% |
| Thursday Night | 60°F | Rain Showers | 9 mph SW | 85% |
| Friday | 67°F | Showers And Thunderstorms | 6 to 9 mph SW | 93% |
| Friday Night | 55°F | Showers And Thunderstorms | 5 mph SW | 93% |
| Saturday | 64°F | Rain Showers Likely | 6 to 9 mph NW | 62% |
| Saturday Night | 42°F | Slight Chance Rain Showers | 7 mph NW | 21% |
| Sunday | 60°F | Slight Chance Rain Showers then Mostly Sunny | 9 mph W | 17% |
| Sunday Night | 39°F | Partly Cloudy then Slight Chance Light Rain | 6 to 9 mph W | 15% |
| Monday | 59°F | Chance Light Rain | 9 to 14 mph NW | 26% |
| Monday Night | 38°F | Chance Light Rain | 8 to 12 mph W | 26% |
| Tuesday | 59°F | Slight Chance Light Rain then Mostly Sunny | 15 mph W | 21% |
Forecast source: National Weather Service (api.weather.gov) for Brookhaven (40.777, -72.908). Updated through the day.
Growing snapshot for Brookhaven
Last spring frost
Apr 18
First fall frost
Oct 28
Growing season
193 days
Hardiness zone
7a
More local growing data for Brookhaven: nearby ZIP 11719 weather · frost dates · planting calendar · New York frost dates
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Climate data from the nearest NOAA station, Shirley Brookhaven Ap, Ny (3.7 mi from Brookhaven). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.