National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

19°F

-7°C

Humidity 54%
Wind Speed W 13 G 26 mph
Barometer 29.97 in (1014.9 mb)
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill6°F (-14°C)
Last update 27 Jan 5:56 pm EST
Extended Forecast for

Islip Terrace NY

  • Tonight

    Tonight: A chance of flurries before 7pm. Partly cloudy, with a low around 9. Wind chill values between zero and 5. West wind 8 to 10 mph, with gusts as high as 24 mph.

    Low: 9 °F

    Chance
    Flurries

  • Wednesday

    Wednesday: Increasing clouds, with a high near 23. Wind chill values between zero and 10. West wind 6 to 9 mph.

    High: 23 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 9. Wind chill values between zero and 5. West wind 3 to 6 mph.

    Low: 9 °F

    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 22. Wind chill values between zero and 10. West wind 6 to 10 mph.

    High: 22 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 7. Northwest wind around 7 mph, with gusts as high as 20 mph.

    Low: 7 °F

    Mostly Clear

  • Friday

    Friday: Sunny and cold, with a high near 19.

    High: 19 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around 4.

    Low: 4 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 22.

    High: 22 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 50 percent chance of snow. Mostly cloudy, with a low around 15.

    Low: 15 °F

    Chance Snow

Detailed Forecast

Tonight
A chance of flurries before 7pm. Partly cloudy, with a low around 9. Wind chill values between zero and 5. West wind 8 to 10 mph, with gusts as high as 24 mph.
Wednesday
Increasing clouds, with a high near 23. Wind chill values between zero and 10. West wind 6 to 9 mph.
Wednesday Night
Mostly cloudy, with a low around 9. Wind chill values between zero and 5. West wind 3 to 6 mph.
Thursday
Sunny, with a high near 22. Wind chill values between zero and 10. West wind 6 to 10 mph.
Thursday Night
Mostly clear, with a low around 7. Northwest wind around 7 mph, with gusts as high as 20 mph.
Friday
Sunny and cold, with a high near 19.
Friday Night
Partly cloudy, with a low around 4.
Saturday
Partly sunny, with a high near 22.
Saturday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 15.
Sunday
A 50 percent chance of snow. Mostly cloudy, with a high near 28. Blustery.
Sunday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 17.
Monday
Mostly sunny, with a high near 32.
Monday Night
Partly cloudy, with a low around 18.
Tuesday
Mostly sunny, with a high near 32.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Islip Terrace NY
 40.75°N 73.18°W (Elev. 30 ft)
Last Update:
12:48 pm EST Jan 27, 2026
Forecast Valid:
6pm EST Jan 27, 2026-6pm EST Feb 3, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation