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 Fog/Mist

36°F

2°C

Humidity 97%
Wind Speed N 3 mph
Barometer 29.83 in (1010.2 mb)
Dewpoint 35°F (2°C)
Visibility 2.00 mi
Last update 18 Feb 8:56 pm EST
Extended Forecast for

Centereach NY

  • Tonight

    Tonight: Rain likely, mainly before 10pm. Areas of fog after 10pm. Otherwise, cloudy, with a low around 30. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 30 °F

    Rain Likely
    and Areas Fog
    then Chance
    Rain and
    Areas Fog

  • Thursday

    Thursday: Mostly cloudy, with a high near 40. Northeast wind 5 to 7 mph becoming east in the afternoon.

    High: 40 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A slight chance of rain and snow before 10pm, then a chance of rain. Mostly cloudy, with a low around 31. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 50%.

    Low: 31 °F

    Slight Chance
    Rain/Snow
    then Chance
    Rain

  • Friday

    Friday: Rain. High near 39. East wind 6 to 11 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 39 °F

    Rain

  • Friday Night

    Friday Night: Rain likely, mainly before 7pm. Mostly cloudy, with a low around 31. Northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 31 °F

    Rain Likely

  • Saturday

    Saturday: A 30 percent chance of rain after 1pm. Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny
    then Chance
    Rain

  • Saturday Night

    Saturday Night: A chance of rain before 1am, then a chance of rain and snow. Cloudy, with a low around 28. Chance of precipitation is 30%.

    Low: 28 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Sunday

    Sunday: A 40 percent chance of snow. Mostly cloudy, with a high near 36.

    High: 36 °F

    Chance Snow

  • Sunday Night

    Sunday Night: A 50 percent chance of snow. Cloudy, with a low around 27.

    Low: 27 °F

    Chance Snow

Detailed Forecast

Tonight
Rain likely, mainly before 10pm. Areas of fog after 10pm. Otherwise, cloudy, with a low around 30. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Mostly cloudy, with a high near 40. Northeast wind 5 to 7 mph becoming east in the afternoon.
Thursday Night
A slight chance of rain and snow before 10pm, then a chance of rain. Mostly cloudy, with a low around 31. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 50%.
Friday
Rain. High near 39. East wind 6 to 11 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Rain likely, mainly before 7pm. Mostly cloudy, with a low around 31. Northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 30 percent chance of rain after 1pm. Partly sunny, with a high near 42.
Saturday Night
A chance of rain before 1am, then a chance of rain and snow. Cloudy, with a low around 28. Chance of precipitation is 30%.
Sunday
A 40 percent chance of snow. Mostly cloudy, with a high near 36.
Sunday Night
A 50 percent chance of snow. Cloudy, with a low around 27.
Monday
A 40 percent chance of snow before 1pm. Mostly cloudy, with a high near 36.
Monday Night
Mostly cloudy, with a low around 23.
Tuesday
Sunny, with a high near 36.
Tuesday Night
Partly cloudy, with a low around 22.
Wednesday
Partly sunny, with a high near 41.
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:
12:48 pm EST Feb 18, 2026
Forecast Valid:
9pm EST Feb 18, 2026-6pm EST Feb 25, 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