National Weather Service Forecast for: Brookhaven NY
Issued by: National Weather Service New York, NY
Updated: 1:53 am EDT Jul 25, 2025
 
Today

Today: Showers and thunderstorms likely, mainly after 5pm. Sunny, with a high near 88. Heat index values as high as 95. Southwest wind 10 to 14 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunny then
T-storms
Likely
 Tonight

Tonight: Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 72. Southwest wind 5 to 7 mph becoming north after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
T-storms
Likely then
Partly Cloudy
 Saturday

Saturday: Mostly sunny, with a high near 84. Northeast wind 8 to 10 mph becoming east in the afternoon.
Mostly Sunny

 Saturday
Night
Saturday Night: Mostly cloudy, with a low around 69. Southeast wind around 6 mph becoming calm in the evening.
Mostly Cloudy

 Sunday

Sunday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 81. Calm wind becoming south 5 to 9 mph in the morning.
Mostly Cloudy
then Slight
Chance
T-storms
 Sunday
Night
Sunday Night: A 30 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 71.
Chance
T-storms

 Monday

Monday: Mostly sunny, with a high near 86.
Mostly Sunny

 Monday
Night
Monday Night: Partly cloudy, with a low around 73.
Partly Cloudy

 Tuesday

Tuesday: Sunny, with a high near 90.
Sunny
Hi 88 °F Lo 72 °F Hi 84 °F Lo 69 °F Hi 81 °F Lo 71 °F Hi 86 °F Lo 73 °F Hi 90 °F

Heat Advisory
Hazardous Weather Outlook
Air Quality Alert
 

Today
 
 Showers and thunderstorms likely, mainly after 5pm. Sunny, with a high near 88. Heat index values as high as 95. Southwest wind 10 to 14 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
 
 Showers and thunderstorms likely, mainly before 8pm. Partly cloudy, with a low around 72. Southwest wind 5 to 7 mph becoming north after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
 
 Mostly sunny, with a high near 84. Northeast wind 8 to 10 mph becoming east in the afternoon.
Saturday Night
 
 Mostly cloudy, with a low around 69. Southeast wind around 6 mph becoming calm in the evening.
Sunday
 
 A 20 percent chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 81. Calm wind becoming south 5 to 9 mph in the morning.
Sunday Night
 
 A 30 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 71.
Monday
 
 Mostly sunny, with a high near 86.
Monday Night
 
 Partly cloudy, with a low around 73.
Tuesday
 
 Sunny, with a high near 90.
Tuesday Night
 
 Partly cloudy, with a low around 74.
Wednesday
 
 Sunny, with a high near 89.
Wednesday Night
 
 Partly cloudy, with a low around 71.
Thursday
 
 A 30 percent chance of showers. Partly sunny, with a high near 82.

 

Forecast from NOAA-NWS for Brookhaven NY.