National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Light Rain

52°F

11°C

Humidity 83%
Wind Speed SW 17 G 31 mph
Barometer 29.65 in (1003.8 mb)
Dewpoint 47°F (8°C)
Visibility 9.00 mi
Wind Chill47°F (8°C)
Last update 27 Mar 12:56 am EDT
Extended Forecast for

Centereach NY

  • Overnight

    Overnight: Showers. Steady temperature around 54. Breezy, with a west wind 15 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 54 °F

    Showers and
    Breezy

  • Friday

    Friday: Showers, mainly before 11am. Temperature falling to around 46 by 5pm. North wind 10 to 13 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    High: 51 °F⇓

    Showers then
    Slight Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 30. North wind 5 to 7 mph.

    Low: 30 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 41. Wind chill values between 20 and 30. Northwest wind 11 to 14 mph.

    High: 41 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 28. Northwest wind 5 to 10 mph becoming light in the evening.

    Low: 28 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 47.

    High: 47 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 40.

    Low: 40 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 55.

    High: 55 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Showers. Steady temperature around 54. Breezy, with a west wind 15 to 21 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers, mainly before 11am. Temperature falling to around 46 by 5pm. North wind 10 to 13 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Mostly cloudy, with a low around 30. North wind 5 to 7 mph.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 41. Wind chill values between 20 and 30. Northwest wind 11 to 14 mph.
Saturday Night
Partly cloudy, with a low around 28. Northwest wind 5 to 10 mph becoming light in the evening.
Sunday
Mostly sunny, with a high near 47.
Sunday Night
Mostly cloudy, with a low around 40.
Monday
Partly sunny, with a high near 55.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
A 30 percent chance of rain after 8am. Mostly cloudy, with a high near 55.
Tuesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 44.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 59.
Wednesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 45.
Thursday
A 30 percent chance of rain. Mostly cloudy, with a high near 59.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Centereach NY
 40.87°N 73.07°W (Elev. 98 ft)
Last Update:
7:31 pm EDT Mar 26, 2026
Forecast Valid:
1am EDT Mar 27, 2026-6pm EDT Apr 2, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation