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

3°F

-16°C

Humidity 72%
Wind Speed SW 3 mph
Barometer 30.16 in (1021.4 mb)
Dewpoint -4°F (-20°C)
Visibility 10.00 mi
Last update 31 Jan 4:56 am EST
Extended Forecast for

Hauppauge NY

Cold Weather Advisory January 31, 04:59am until February 1, 10:00am
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory January 31, 04:59am until February 1, 10:00am

    NOW until 10:00am Sun

    Cold Weather Advisory

  • Today

    High: 22 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 12. Wind chill values between -5 and 5. North wind 7 to 16 mph.

    Low: 12 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 23. Wind chill values between -5 and 5. Blustery, with a north wind 16 to 22 mph, with gusts as high as 32 mph.

    High: 23 °F

    Mostly Cloudy
    and Blustery

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 14. Wind chill values between zero and 5. Northwest wind 11 to 15 mph.

    Low: 14 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 30. Northwest wind 8 to 11 mph.

    High: 30 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 14.

    Low: 14 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 31.

    High: 31 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 18.

    Low: 18 °F

    Partly Cloudy

Detailed Forecast

Today
Increasing clouds, with a high near 22. Wind chill values between -5 and 5. North wind 5 to 8 mph.
Tonight
Mostly cloudy, with a low around 12. Wind chill values between -5 and 5. North wind 7 to 16 mph.
Sunday
Mostly cloudy, with a high near 23. Wind chill values between -5 and 5. Blustery, with a north wind 16 to 22 mph, with gusts as high as 32 mph.
Sunday Night
Mostly cloudy, with a low around 14. Wind chill values between zero and 5. Northwest wind 11 to 15 mph.
Monday
Mostly sunny, with a high near 30. Northwest wind 8 to 11 mph.
Monday Night
Mostly clear, with a low around 14.
Tuesday
Sunny, with a high near 31.
Tuesday Night
Partly cloudy, with a low around 18.
Wednesday
Mostly sunny, with a high near 30.
Wednesday Night
Partly cloudy, with a low around 15.
Thursday
Mostly sunny, with a high near 28.
Thursday Night
Partly cloudy, with a low around 14.
Friday
Mostly sunny, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hauppauge NY
 40.82°N 73.2°W (Elev. 197 ft)
Last Update:
2:07 am EST Jan 31, 2026
Forecast Valid:
4am EST Jan 31, 2026-6pm EST Feb 6, 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