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.

27°F

-3°C

Humidity 63%
Wind Speed W 8 mph
Barometer 29.77 in (1008.2 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 24 Feb 3:56 am EST
Extended Forecast for

Hauppauge NY

  • Today

    Today: Patchy blowing snow before 7am. Mostly sunny, with a high near 29. Wind chill values between 10 and 20. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.

    High: 29 °F

    Patchy
    Blowing Snow
    then Partly
    Sunny

  • Tonight

    Tonight: A 50 percent chance of snow after 4am. Increasing clouds, with a temperature falling to near 19 by 9pm, then rising to around 31 during the remainder of the night. Wind chill values between 10 and 15. Light and variable wind becoming south 5 to 7 mph after midnight.

    Low: 19 °F⇑

    Mostly Clear
    then Chance
    Snow

  • Wednesday

    Wednesday: Snow likely, possibly mixing with rain after 10am, then gradually ending. Cloudy, then gradually becoming mostly sunny, with a high near 39. Southwest wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 39 °F

    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 29. West wind around 6 mph.

    Low: 29 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of snow before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 37. West wind around 6 mph becoming south in the afternoon. Chance of precipitation is 50%.

    High: 37 °F

    Slight Chance
    Snow then
    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Snow likely, mainly before 1am. Mostly cloudy, with a low around 27. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 27 °F

    Snow Likely

  • Friday

    Friday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy blowing snow before 7am. Mostly sunny, with a high near 29. Wind chill values between 10 and 20. Northwest wind 8 to 10 mph, with gusts as high as 20 mph.
Tonight
A 50 percent chance of snow after 4am. Increasing clouds, with a temperature falling to near 19 by 9pm, then rising to around 31 during the remainder of the night. Wind chill values between 10 and 15. Light and variable wind becoming south 5 to 7 mph after midnight.
Wednesday
Snow likely, possibly mixing with rain after 10am, then gradually ending. Cloudy, then gradually becoming mostly sunny, with a high near 39. Southwest wind 9 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday Night
Partly cloudy, with a low around 29. West wind around 6 mph.
Thursday
A slight chance of snow before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 37. West wind around 6 mph becoming south in the afternoon. Chance of precipitation is 50%.
Thursday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 27. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Friday
Mostly sunny, with a high near 36.
Friday Night
Partly cloudy, with a low around 27.
Saturday
Mostly sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 29.
Sunday
Mostly sunny, with a high near 38.
Sunday Night
Partly cloudy, with a low around 17.
Monday
A 30 percent chance of snow. 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:
Hauppauge NY
 40.82°N 73.2°W (Elev. 197 ft)
Last Update:
1:15 am EST Feb 24, 2026
Forecast Valid:
4am EST Feb 24, 2026-6pm EST Mar 2, 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