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.

A Few Clouds

31°F

-1°C

Humidity 36%
Wind Speed NW 10 mph
Barometer 30.16 in (1021.3 mb)
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 4 Feb 3:56 pm EST
Extended Forecast for

Hauppauge NY

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 12. Northwest wind around 5 mph becoming calm in the evening.

    Low: 12 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 30. Wind chill values between 10 and 20. North wind 3 to 6 mph.

    High: 30 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 14. Calm wind.

    Low: 14 °F

    Partly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 27. Wind chill values between 15 and 25. Calm wind becoming northwest around 5 mph.

    High: 27 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Light snow likely, mainly after 1am. Cloudy, with a low around 16. Calm wind becoming west 5 to 8 mph after midnight. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 16 °F

    Chance Light
    Snow then
    Light Snow
    Likely

  • Saturday

    Saturday: A 50 percent chance of snow. Mostly cloudy, with a temperature rising to near 21 by 10am, then falling to around 14 during the remainder of the day. Blustery.

    High: 21 °F⇓

    Chance Snow
    and Blustery

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 4. Blustery.

    Low: 4 °F

    Partly Cloudy
    and Blustery
    then Mostly
    Clear

  • Sunday

    Sunday: Sunny and cold, with a high near 18.

    High: 18 °F

    Cold

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 8.

    Low: 8 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 12. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 30. Wind chill values between 10 and 20. North wind 3 to 6 mph.
Thursday Night
Partly cloudy, with a low around 14. Calm wind.
Friday
Mostly cloudy, with a high near 27. Wind chill values between 15 and 25. Calm wind becoming northwest around 5 mph.
Friday Night
Light snow likely, mainly after 1am. Cloudy, with a low around 16. Calm wind becoming west 5 to 8 mph after midnight. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Saturday
A 50 percent chance of snow. Mostly cloudy, with a temperature rising to near 21 by 10am, then falling to around 14 during the remainder of the day. Blustery.
Saturday Night
Partly cloudy, with a low around 4. Blustery.
Sunday
Sunny and cold, with a high near 18.
Sunday Night
Mostly clear, with a low around 8.
Monday
Mostly sunny, with a high near 26.
Monday Night
Partly cloudy, with a low around 15.
Tuesday
Partly sunny, with a high near 31.
Tuesday Night
Mostly cloudy, with a low around 18.
Wednesday
Mostly sunny, with a high near 33.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Hauppauge NY
 40.82°N 73.2°W (Elev. 197 ft)
Last Update:
1:52 pm EST Feb 4, 2026
Forecast Valid:
4pm EST Feb 4, 2026-6pm EST Feb 11, 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