NWS Forecast for Brookhaven NY

National Weather Service Forecast for: Brookhaven NY
Issued by: National Weather Service New York, NY

Updated: 4:34 pm EDT Jun 18, 2026

Tonight Mostly Cloudy	Juneteenth Decreasing Clouds	Friday Night Clear	Saturday Sunny	Saturday Night Mostly Clear	Sunday Sunny	Sunday Night Partly Cloudy	Monday Chance Showers then Showers	Monday Night Showers
Lo 69 °F	Hi 78 °F	Lo 65 °F	Hi 83 °F	Lo 65 °F	Hi 82 °F	Lo 65 °F	Hi 78 °F	Lo 65 °F

Hazardous Weather Outlook
Rip Current Statement

Tonight	Mostly cloudy, with a low around 69. West wind around 11 mph, with gusts as high as 21 mph.
Juneteenth	Mostly cloudy, then gradually becoming sunny, with a high near 78. Southwest wind 9 to 18 mph, with gusts as high as 30 mph.
Friday Night	Clear, with a low around 65. West wind 7 to 10 mph, with gusts as high as 20 mph.
Saturday	Sunny, with a high near 83. West wind around 18 mph, with gusts as high as 30 mph.
Saturday Night	Mostly clear, with a low around 65. Northwest wind around 6 mph.
Sunday	Sunny, with a high near 82.
Sunday Night	Partly cloudy, with a low around 65.
Monday	Showers, mainly after 2pm. High near 78. Chance of precipitation is 80%.
Monday Night	Showers, mainly before 2am. Low around 65. Chance of precipitation is 80%.
Tuesday	A 30 percent chance of showers before 2pm. Partly sunny, with a high near 82.
Tuesday Night	Partly cloudy, with a low around 66.
Wednesday	Sunny, with a high near 81.
Wednesday Night	Partly cloudy, with a low around 66.
Thursday	Mostly sunny, with a high near 81.

Forecast from NOAA-NWS for Brookhaven NY.