National Weather Service Forecast for: Brentwood NY
Issued by: National Weather Service New York, NY
Updated: 3:02 pm EDT Jul 26, 2025
 
Tonight

Tonight: Mostly cloudy, with a low around 69. South wind 5 to 8 mph becoming calm  after midnight.
Mostly Cloudy
Sunday

Sunday: A 50 percent chance of showers and thunderstorms.  Mostly cloudy, with a high near 81. South wind 6 to 10 mph.
Chance
Showers
Sunday
Night
Sunday Night: A 40 percent chance of showers and thunderstorms before 2am.  Mostly cloudy, with a low around 72. South wind 5 to 7 mph becoming light and variable  in the evening.
Chance
Showers
Monday

Monday: Sunny, with a high near 91. Heat index values as high as 98. Light and variable wind becoming north 5 to 7 mph in the morning.
Sunny
Monday
Night
Monday Night: Mostly clear, with a low around 73. South wind around 6 mph becoming calm  in the evening.
Mostly Clear
Tuesday

Tuesday: Sunny, with a high near 94.
Sunny
Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 74.
Partly Cloudy
Wednesday

Wednesday: Sunny, with a high near 91.
Sunny
Wednesday
Night
Wednesday Night: A 40 percent chance of showers.  Mostly cloudy, with a low around 72.
Chance
Showers
Lo 69 °F Hi 81 °F Lo 72 °F Hi 91 °F Lo 73 °F Hi 94 °F Lo 74 °F Hi 91 °F Lo 72 °F

Hazardous Weather Outlook
Air Quality Alert
Heat Advisory
 

Tonight
 
Mostly cloudy, with a low around 69. South wind 5 to 8 mph becoming calm after midnight.
Sunday
 
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81. South wind 6 to 10 mph.
Sunday Night
 
A 40 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 72. South wind 5 to 7 mph becoming light and variable in the evening.
Monday
 
Sunny, with a high near 91. Heat index values as high as 98. Light and variable wind becoming north 5 to 7 mph in the morning.
Monday Night
 
Mostly clear, with a low around 73. South wind around 6 mph becoming calm in the evening.
Tuesday
 
Sunny, with a high near 94.
Tuesday Night
 
Partly cloudy, with a low around 74.
Wednesday
 
Sunny, with a high near 91.
Wednesday Night
 
A 40 percent chance of showers. Mostly cloudy, with a low around 72.
Thursday
 
A 50 percent chance of showers. Mostly cloudy, with a high near 83.
Thursday Night
 
A 50 percent chance of showers. Mostly cloudy, with a low around 67.
Friday
 
Mostly sunny, with a high near 82.
Friday Night
 
Mostly clear, with a low around 64.
Saturday
 
Sunny, with a high near 81.

 

Forecast from NOAA-NWS for Brentwood NY.