NWS Forecast for Brookhaven NY

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

Updated: 7:08 am EDT Jun 30, 2026

Today Mostly Sunny	Tonight Slight Chance T-storms	Wednesday Mostly Sunny then Slight Chance T-storms	Wednesday Night Slight Chance T-storms	Thursday Sunny	Thursday Night Mostly Clear	Friday Sunny	Friday Night Partly Cloudy	Independence Day Mostly Sunny
Hi 83 °F	Lo 70 °F	Hi 84 °F	Lo 72 °F	Hi 92 °F	Lo 75 °F	Hi 96 °F	Lo 76 °F	Hi 89 °F

Hazardous Weather Outlook
Extreme Heat Watch

Today	Mostly sunny, with a high near 83. South wind 10 to 14 mph.
Tonight	A 20 percent chance of showers and thunderstorms after 11pm. Partly cloudy, with a low around 70. Southwest wind 10 to 13 mph, with gusts as high as 24 mph.
Wednesday	A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 84. Southwest wind 11 to 15 mph, with gusts as high as 25 mph.
Wednesday Night	A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72. Southwest wind 10 to 13 mph, with gusts as high as 23 mph.
Thursday	Sunny, with a high near 92. Southwest wind 8 to 13 mph.
Thursday Night	Mostly clear, with a low around 75.
Friday	Sunny, with a high near 96.
Friday Night	Partly cloudy, with a low around 76.
Independence Day	Mostly sunny, with a high near 89.
Saturday Night	A chance of showers between 8pm and 2am. Partly cloudy, with a low around 73. Chance of precipitation is 30%.
Sunday	Mostly sunny, with a high near 88.
Sunday Night	A 30 percent chance of showers. Mostly cloudy, with a low around 71.
Monday	A 30 percent chance of showers. Partly sunny, with a high near 83.

Forecast from NOAA-NWS for Brookhaven NY.