National Weather Service Forecast for: Islip NY
Issued by: National Weather Service New York, NY
Updated: 9:44 am EDT Apr 13, 2025
 
Today

Today: Patchy drizzle with a slight chance of rain before noon. Mostly cloudy, with a high near 55. Northwest wind around 11 mph.
Patchy
Drizzle
 Tonight

Tonight: Partly cloudy, with a low around 42. Northwest wind around 7 mph.
Partly Cloudy
 Monday

Monday: Partly sunny, with a high near 59. Northwest wind 6 to 9 mph becoming southwest in the afternoon.
Partly Sunny
 Monday
Night
Monday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 46. South wind 6 to 8 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
 Tuesday

Tuesday: A 30 percent chance of showers, mainly before 8am. Mostly cloudy, with a high near 62. Southwest wind 6 to 15 mph, with gusts as high as 25 mph.
Chance
Showers
 Tuesday
Night
Tuesday Night: Partly cloudy, with a low around 41.
Partly Cloudy
 Wednesday

Wednesday: Mostly sunny, with a high near 53.
Mostly Sunny
 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 38.
Mostly Clear
 Thursday

Thursday: Sunny, with a high near 56.
Sunny
Hi 55 °F Lo 42 °F Hi 59 °F Lo 46 °F Hi 62 °F Lo 41 °F Hi 53 °F Lo 38 °F Hi 56 °F

 

Today
 
 Patchy drizzle with a slight chance of rain before noon. Mostly cloudy, with a high near 55. Northwest wind around 11 mph.
Tonight
 
 Partly cloudy, with a low around 42. Northwest wind around 7 mph.
Monday
 
 Partly sunny, with a high near 59. Northwest wind 6 to 9 mph becoming southwest in the afternoon.
Monday Night
 
 Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 46. South wind 6 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
 
 A 30 percent chance of showers, mainly before 8am. Mostly cloudy, with a high near 62. Southwest wind 6 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
 
 Partly cloudy, with a low around 41.
Wednesday
 
 Mostly sunny, with a high near 53.
Wednesday Night
 
 Mostly clear, with a low around 38.
Thursday
 
 Sunny, with a high near 56.
Thursday Night
 
 Mostly clear, with a low around 40.
Friday
 
 Mostly sunny, with a high near 58.
Friday Night
 
 A 40 percent chance of showers. Mostly cloudy, with a low around 47.
Saturday
 
 A 40 percent chance of showers. Mostly cloudy, with a high near 63.

 

Forecast from NOAA-NWS for Islip NY.