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

12°F

-11°C

Humidity 48%
Wind Speed NW 8 mph
Barometer 30.16 in (1021.3 mb)
Dewpoint -4°F (-20°C)
Visibility 10.00 mi
Wind Chill0°F (-18°C)
Last update 30 Jan 9:56 pm EST
Extended Forecast for

Holbrook NY

Cold Weather Advisory January 30, 10:11pm until January 31, 10:00am
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory January 30, 10:11pm until January 31, 10:00am

    NOW until 10:00am Sat

    Cold Weather Advisory

  • Tonight

    Low: 4 °F

    Mostly Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 23. Wind chill values between -5 and 5. North wind 5 to 7 mph.

    High: 23 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 13. Wind chill values between -5 and 5. North wind 8 to 16 mph, with gusts as high as 32 mph.

    Low: 13 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: A 30 percent chance of snow, mainly before 1pm. Cloudy, with a high near 26. Wind chill values between -5 and 5. Blustery, with a north wind 17 to 21 mph, with gusts as high as 37 mph.

    High: 26 °F

    Chance Snow
    and Blustery

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 15. Northwest wind 9 to 15 mph, with gusts as high as 31 mph.

    Low: 15 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 15.

    Low: 15 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 31.

    High: 31 °F

    Sunny

Detailed Forecast

Tonight
Mostly clear, with a low around 4. Wind chill values between -5 and zero. Northwest wind 6 to 8 mph.
Saturday
Increasing clouds, with a high near 23. Wind chill values between -5 and 5. North wind 5 to 7 mph.
Saturday Night
A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 13. Wind chill values between -5 and 5. North wind 8 to 16 mph, with gusts as high as 32 mph.
Sunday
A 30 percent chance of snow, mainly before 1pm. Cloudy, with a high near 26. Wind chill values between -5 and 5. Blustery, with a north wind 17 to 21 mph, with gusts as high as 37 mph.
Sunday Night
Mostly cloudy, with a low around 15. Northwest wind 9 to 15 mph, with gusts as high as 31 mph.
Monday
Mostly sunny, with a high near 31.
Monday Night
Mostly clear, with a low around 15.
Tuesday
Sunny, with a high near 31.
Tuesday Night
Partly cloudy, with a low around 18.
Wednesday
Partly sunny, with a high near 31.
Wednesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 17.
Thursday
A 30 percent chance of snow. Partly sunny, with a high near 28.
Thursday Night
Partly cloudy, with a low around 13.
Friday
Partly sunny, with a high near 29.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Holbrook NY
 40.8°N 73.09°W (Elev. 98 ft)
Last Update:
1:28 pm EST Jan 30, 2026
Forecast Valid:
10pm EST Jan 30, 2026-6pm EST Feb 6, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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