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.

Mostly Cloudy

43°F

6°C

Humidity 82%
Wind Speed NW 12 mph
Barometer 29.77 in (1008.0 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 11 Jan 10:56 am EST
Extended Forecast for

Centereach NY

  • Today

    Today: A chance of rain and snow showers after 4pm. Mostly sunny, with a high near 45. West wind 9 to 14 mph. Chance of precipitation is 30%.

    High: 45 °F

    Chance
    Rain/Snow

  • Tonight

    Tonight: A chance of rain and snow showers before 7pm, then a slight chance of snow showers between 7pm and 10pm. Mostly clear, with a low around 28. Wind chill values between 15 and 20. Breezy, with a west wind 14 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 30%.

    Low: 28 °F

    Breezy.
    Chance
    Rain/Snow
    then Mostly
    Clear

  • Monday

    Monday: Sunny, with a high near 40. Wind chill values between 20 and 30. West wind 10 to 14 mph, with gusts as high as 25 mph.

    High: 40 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 30. Southwest wind 7 to 9 mph.

    Low: 30 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 44. Southwest wind 7 to 9 mph.

    High: 44 °F

    Sunny

  • Tuesday Night

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

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Cloudy, with a high near 46.

    High: 46 °F

    Cloudy

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain after 1am. Mostly cloudy, with a low around 30.

    Low: 30 °F

    Cloudy then
    Chance Rain

  • Thursday

    Thursday: A chance of rain before 1pm, then a chance of rain and snow. Partly sunny, with a high near 38. Chance of precipitation is 30%.

    High: 38 °F

    Chance Rain
    then Chance
    Rain/Snow

Detailed Forecast

Today
A chance of rain and snow showers after 4pm. Mostly sunny, with a high near 45. West wind 9 to 14 mph. Chance of precipitation is 30%.
Tonight
A chance of rain and snow showers before 7pm, then a slight chance of snow showers between 7pm and 10pm. Mostly clear, with a low around 28. Wind chill values between 15 and 20. Breezy, with a west wind 14 to 23 mph, with gusts as high as 37 mph. Chance of precipitation is 30%.
Monday
Sunny, with a high near 40. Wind chill values between 20 and 30. West wind 10 to 14 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 30. Southwest wind 7 to 9 mph.
Tuesday
Sunny, with a high near 44. Southwest wind 7 to 9 mph.
Tuesday Night
Mostly cloudy, with a low around 36.
Wednesday
Cloudy, with a high near 46.
Wednesday Night
A 30 percent chance of rain after 1am. Mostly cloudy, with a low around 30.
Thursday
A chance of rain before 1pm, then a chance of rain and snow. Partly sunny, with a high near 38. Chance of precipitation is 30%.
Thursday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 21.
Friday
Partly sunny, with a high near 33.
Friday Night
Partly cloudy, with a low around 22.
Saturday
Mostly sunny, with a high near 37.
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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:
1:40 am EST Jan 11, 2026
Forecast Valid:
11am EST Jan 11, 2026-6pm EST Jan 17, 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