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.

Fair and Windy

16°F

-9°C

Humidity 54%
Wind Speed N 28 G 37 mph
Barometer 29.86 in (1011.1 mb)
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Wind Chill-4°F (-20°C)
Last update 2 Feb 1:56 am EST
Extended Forecast for

Centereach NY

  • Overnight

    Overnight: Partly cloudy, with a low around 12. Wind chill values between zero and 5. Northwest wind around 8 mph.

    Low: 12 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 29. Wind chill values between zero and 10. Northwest wind 7 to 10 mph, with gusts as high as 20 mph.

    High: 29 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 13. Light northwest wind.

    Low: 13 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 31. Wind chill values between 15 and 25. Calm wind becoming west 5 to 7 mph in the morning.

    High: 31 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 22. Calm wind.

    Low: 22 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 31.

    High: 31 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 14.

    Low: 14 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 12.

    Low: 12 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 12. Wind chill values between zero and 5. Northwest wind around 8 mph.
Monday
Sunny, with a high near 29. Wind chill values between zero and 10. Northwest wind 7 to 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 13. Light northwest wind.
Tuesday
Mostly sunny, with a high near 31. Wind chill values between 15 and 25. Calm wind becoming west 5 to 7 mph in the morning.
Tuesday Night
A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 22. Calm wind.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 31.
Wednesday Night
Partly cloudy, with a low around 14.
Thursday
Mostly sunny, with a high near 28.
Thursday Night
Partly cloudy, with a low around 12.
Friday
A 30 percent chance of snow after 1pm. Mostly cloudy, with a high near 31.
Friday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 8.
Saturday
Mostly sunny and cold, with a high near 17. Blustery.
Saturday Night
Partly cloudy, with a low around 4. Blustery.
Sunday
Mostly sunny and cold, with a high near 19.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Centereach NY
 40.87°N 73.07°W (Elev. 98 ft)
Last Update:
12:53 am EST Feb 2, 2026
Forecast Valid:
2am EST Feb 2, 2026-6pm EST Feb 8, 2026
 
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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