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.

Partly Cloudy

34°F

1°C

Humidity 52%
Wind Speed W 16 G 29 mph
Barometer 29.79 in (1008.7 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 11 Feb 10:56 pm EST
Extended Forecast for

Centereach NY

  • Tonight

    Tonight: Partly cloudy, with a low around 24. Wind chill values between 15 and 20. Northwest wind around 11 mph.

    Low: 24 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 36. Wind chill values between 15 and 25. Northwest wind 10 to 14 mph.

    High: 36 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 19. Wind chill values between 10 and 15. Northwest wind around 8 mph.

    Low: 19 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 35. Wind chill values between 10 and 20. Northwest wind 6 to 9 mph.

    High: 35 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of snow showers or flurries after 1am. Increasing clouds, with a low around 25. West wind around 7 mph.

    Low: 25 °F

    Partly Cloudy
    then Slight
    Chance Snow
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 38.

    High: 38 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 37.

    High: 37 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 27.

    Low: 27 °F

    Chance Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 24. Wind chill values between 15 and 20. Northwest wind around 11 mph.
Thursday
Sunny, with a high near 36. Wind chill values between 15 and 25. Northwest wind 10 to 14 mph.
Thursday Night
Partly cloudy, with a low around 19. Wind chill values between 10 and 15. Northwest wind around 8 mph.
Friday
Sunny, with a high near 35. Wind chill values between 10 and 20. Northwest wind 6 to 9 mph.
Friday Night
A 20 percent chance of snow showers or flurries after 1am. Increasing clouds, with a low around 25. West wind around 7 mph.
Saturday
Mostly sunny, with a high near 38.
Saturday Night
Partly cloudy, with a low around 25.
Sunday
Partly sunny, with a high near 37.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 27.
Washington's Birthday
A chance of rain and snow. Mostly cloudy, with a high near 39. Chance of precipitation is 40%.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Mostly sunny, with a high near 41.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
A 40 percent chance of rain. Cloudy, with a high near 42.
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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:
12:37 pm EST Feb 11, 2026
Forecast Valid:
11pm EST Feb 11, 2026-6pm EST Feb 18, 2026
 
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Additional Resources

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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