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

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

43°F

6°C

Humidity 82%
Wind Speed SW 7 mph
Barometer 29.34 in (993.5 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 15 Jan 4:56 am EST
Extended Forecast for

Hauppauge NY

  • Today

    Today: Mostly cloudy, with a temperature falling to around 34 by 5pm. West wind 6 to 14 mph, with gusts as high as 26 mph.

    High: 42 °F⇓

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 20. Wind chill values between 5 and 15. West wind 11 to 15 mph, with gusts as high as 30 mph.

    Low: 20 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 35. Wind chill values between 5 and 15. West wind 10 to 16 mph, with gusts as high as 30 mph.

    High: 35 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of snow after 1am. Increasing clouds, with a low around 29. Southwest wind around 7 mph.

    Low: 29 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: A chance of snow before 10am, then a chance of rain and snow between 10am and 1pm, then a chance of rain after 1pm. Mostly cloudy, with a high near 42. Southwest wind 5 to 8 mph. Chance of precipitation is 50%.

    High: 42 °F

    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

  • Sunday

    Sunday: A 30 percent chance of snow. Mostly cloudy, with a high near 37.

    High: 37 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 21.

    Low: 21 °F

    Mostly Cloudy

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 30.

    High: 30 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, with a temperature falling to around 34 by 5pm. West wind 6 to 14 mph, with gusts as high as 26 mph.
Tonight
Mostly cloudy, with a low around 20. Wind chill values between 5 and 15. West wind 11 to 15 mph, with gusts as high as 30 mph.
Friday
Sunny, with a high near 35. Wind chill values between 5 and 15. West wind 10 to 16 mph, with gusts as high as 30 mph.
Friday Night
A 20 percent chance of snow after 1am. Increasing clouds, with a low around 29. Southwest wind around 7 mph.
Saturday
A chance of snow before 10am, then a chance of rain and snow between 10am and 1pm, then a chance of rain after 1pm. Mostly cloudy, with a high near 42. Southwest wind 5 to 8 mph. Chance of precipitation is 50%.
Saturday Night
Mostly cloudy, with a low around 29.
Sunday
A 30 percent chance of snow. Mostly cloudy, with a high near 37.
Sunday Night
Mostly cloudy, with a low around 21.
M.L.King Day
Mostly sunny, with a high near 30.
Monday Night
Partly cloudy, with a low around 16.
Tuesday
Mostly sunny, with a high near 25.
Tuesday Night
Mostly clear, with a low around 12.
Wednesday
Mostly sunny, with a high near 29.
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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:
2:03 am EST Jan 15, 2026
Forecast Valid:
5am EST Jan 15, 2026-6pm EST Jan 21, 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