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.

A Few Clouds

57°F

14°C

Humidity 62%
Wind Speed SW 14 G 18 mph
Barometer 29.92 in (1013.3 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 26 Mar 11:56 am EDT
Extended Forecast for

Centereach NY

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 60. Southwest wind around 14 mph.

    High: 60 °F

    Mostly Sunny

  • Tonight

    Tonight: Showers, mainly after 11pm. Low around 45. South wind 9 to 17 mph becoming west after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 45 °F

    Showers

  • Friday

    Friday: Showers likely, mainly before 8am. Cloudy, with a steady temperature around 48. North wind 8 to 11 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 48 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A slight chance of rain before 11pm, then a slight chance of rain and snow between 11pm and 2am, then a chance of snow after 2am. Mostly cloudy, with a low around 30. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 30%.

    Low: 30 °F

    Chance
    Rain/Snow

  • Saturday

    Saturday: A 30 percent chance of snow before 8am. Mostly sunny, with a high near 42. North wind 10 to 13 mph.

    High: 42 °F

    Chance Snow
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 36.

    Low: 36 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 54.

    High: 54 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 60. Southwest wind around 14 mph.
Tonight
Showers, mainly after 11pm. Low around 45. South wind 9 to 17 mph becoming west after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Showers likely, mainly before 8am. Cloudy, with a steady temperature around 48. North wind 8 to 11 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A slight chance of rain before 11pm, then a slight chance of rain and snow between 11pm and 2am, then a chance of snow after 2am. Mostly cloudy, with a low around 30. Calm wind becoming north around 5 mph after midnight. Chance of precipitation is 30%.
Saturday
A 30 percent chance of snow before 8am. Mostly sunny, with a high near 42. North wind 10 to 13 mph.
Saturday Night
Partly cloudy, with a low around 29.
Sunday
Mostly sunny, with a high near 46.
Sunday Night
Mostly cloudy, with a low around 36.
Monday
Mostly cloudy, with a high near 54.
Monday Night
A 30 percent chance of rain after 2am. Mostly cloudy, with a low around 43.
Tuesday
A 40 percent chance of rain. Mostly cloudy, with a high near 54.
Tuesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 40.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Centereach NY
 40.87°N 73.07°W (Elev. 98 ft)
Last Update:
5:42 am EDT Mar 26, 2026
Forecast Valid:
12pm EDT Mar 26, 2026-6pm EDT Apr 1, 2026
 
Forecast Discussion
 
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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