National Weather Service Forecast for: Brookhaven NY
Issued by: National Weather Service New York, NY
Updated: 2:34 pm EDT Jul 28, 2026
 
This
Afternoon
This Afternoon: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 77. South wind around 14 mph.
Slight Chance
T-storms
 Tonight

Tonight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11pm. Low around 69. South wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Showers

 Wednesday

Wednesday: Showers and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms after 11am. High near 77. Southeast wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Showers then
Chance
T-storms
 Wednesday
Night
Wednesday Night: A chance of showers and thunderstorms, then showers likely after 11pm. Mostly cloudy, with a low around 67. East wind 5 to 7 mph becoming west in the evening. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely
 Thursday

Thursday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 78. North wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Showers
Likely
 Thursday
Night
Thursday Night: Showers likely before 8pm. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Showers
Likely then
Mostly Cloudy
 Friday

Friday: Mostly sunny, with a high near 81.
Mostly Sunny

 Friday
Night
Friday Night: Mostly clear, with a low around 65.
Mostly Clear

 Saturday

Saturday: Mostly sunny, with a high near 80.
Mostly Sunny
Hi 77 °F Lo 69 °F Hi 77 °F Lo 67 °F Hi 78 °F Lo 64 °F Hi 81 °F Lo 65 °F Hi 80 °F

Hazardous Weather Outlook
Flood Watch
Rip Current Statement
 

This Afternoon
 
 A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 77. South wind around 14 mph.
Tonight
 
 A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11pm. Low around 69. South wind 11 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
Wednesday
 
 Showers and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms after 11am. High near 77. Southeast wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Wednesday Night
 
 A chance of showers and thunderstorms, then showers likely after 11pm. Mostly cloudy, with a low around 67. East wind 5 to 7 mph becoming west in the evening. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
 
 Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 78. North wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
 
 Showers likely before 8pm. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Friday
 
 Mostly sunny, with a high near 81.
Friday Night
 
 Mostly clear, with a low around 65.
Saturday
 
 Mostly sunny, with a high near 80.
Saturday Night
 
 Mostly cloudy, with a low around 66.
Sunday
 
 Partly sunny, with a high near 80.
Sunday Night
 
 A 30 percent chance of showers. Mostly cloudy, with a low around 67.
Monday
 
 Partly sunny, with a high near 81.
Monday Night
 
 Mostly cloudy, with a low around 66.
Tuesday
 
 Mostly sunny, with a high near 82.

 

Forecast from NOAA-NWS for Brookhaven NY.