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.

Fair

14°F

-10°C

Humidity 61%
Wind Speed NW 13 mph
Barometer 30.01 in (1016.5 mb)
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill0°F (-18°C)
Last update 29 Jan 4:56 am EST
Extended Forecast for

Holbrook NY

Cold Weather Advisory January 30, 12:00am until January 30, 10:00am
Click here for hazard details and duration
Cold Weather Advisory

  • Today

    Today: Mostly sunny, with a high near 21. Wind chill values between zero and 10. Northwest wind 7 to 11 mph.

    High: 21 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 8. Wind chill values between -5 and zero. Northwest wind around 9 mph, with gusts as high as 20 mph.

    Low: 8 °F

    Mostly Clear

  • Friday

    Friday: Sunny and cold, with a high near 17. Wind chill values between -5 and 5. West wind 9 to 13 mph.

    High: 17 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around 5. Northwest wind 3 to 7 mph.

    Low: 5 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 20. North wind 3 to 8 mph.

    High: 20 °F

    Cold

  • Saturday Night

    Saturday Night: A 40 percent chance of snow after 1am. Mostly cloudy, with a steady temperature around 15.

    Low: 15 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: A 50 percent chance of snow. Cloudy, with a high near 25. Blustery.

    High: 25 °F

    Chance Snow
    and Blustery

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 21. Wind chill values between zero and 10. Northwest wind 7 to 11 mph.
Tonight
Mostly clear, with a low around 8. Wind chill values between -5 and zero. Northwest wind around 9 mph, with gusts as high as 20 mph.
Friday
Sunny and cold, with a high near 17. Wind chill values between -5 and 5. West wind 9 to 13 mph.
Friday Night
Partly cloudy, with a low around 5. Northwest wind 3 to 7 mph.
Saturday
Mostly sunny and cold, with a high near 20. North wind 3 to 8 mph.
Saturday Night
A 40 percent chance of snow after 1am. Mostly cloudy, with a steady temperature around 15.
Sunday
A 50 percent chance of snow. Cloudy, with a high near 25. Blustery.
Sunday Night
Mostly cloudy, with a low around 16.
Monday
Mostly sunny, with a high near 32.
Monday Night
Mostly clear, with a low around 17.
Tuesday
Mostly sunny, with a high near 33.
Tuesday Night
Partly cloudy, with a low around 19.
Wednesday
Mostly sunny, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Holbrook NY
 40.8°N 73.09°W (Elev. 98 ft)
Last Update:
1:43 am EST Jan 29, 2026
Forecast Valid:
5am EST Jan 29, 2026-6pm EST Feb 4, 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