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

11°F

-12°C

Humidity 53%
Wind Speed NW 16 mph
Barometer 30.22 in (1023.5 mb)
Dewpoint -3°F (-19°C)
Visibility 10.00 mi
Wind Chill-6°F (-21°C)
Last update 9 Feb 5:56 am EST
Extended Forecast for

Islip Terrace NY

Cold Weather Advisory February 9, 06:28am until February 9, 10:00am
Click here for hazard details and duration
...
  •  
    Cold Weather Advisory February 9, 06:28am until February 9, 10:00am

    NOW until 10:00am Mon

    Cold Weather Advisory

  • Today

    High: 27 °F

    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 17. Calm wind.

    Low: 17 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of snow after 1pm. Increasing clouds, with a high near 37. Wind chill values between 15 and 25. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 37 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Tuesday Night

    Tuesday Night: A chance of snow, mixing with rain after 10pm, then gradually ending. Cloudy, then gradually becoming partly cloudy, with a low around 27. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 30%.

    Low: 27 °F

    Chance
    Rain/Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 38. West wind 6 to 11 mph, with gusts as high as 21 mph.

    High: 38 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 23.

    Low: 23 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 19.

    Low: 19 °F

    Mostly Clear

Detailed Forecast

Today
Sunny, with a high near 27. Wind chill values between zero and 10. Northwest wind 6 to 10 mph.
Tonight
Mostly cloudy, with a low around 17. Calm wind.
Tuesday
A 20 percent chance of snow after 1pm. Increasing clouds, with a high near 37. Wind chill values between 15 and 25. Calm wind becoming southwest around 6 mph in the afternoon.
Tuesday Night
A chance of snow, mixing with rain after 10pm, then gradually ending. Cloudy, then gradually becoming partly cloudy, with a low around 27. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 38. West wind 6 to 11 mph, with gusts as high as 21 mph.
Wednesday Night
Partly cloudy, with a low around 23.
Thursday
Mostly sunny, with a high near 34.
Thursday Night
Mostly clear, with a low around 19.
Friday
Sunny, with a high near 33.
Friday Night
Mostly clear, with a low around 21.
Saturday
Sunny, with a high near 35.
Saturday Night
Partly cloudy, with a low around 22.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 36. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Islip Terrace NY
 40.75°N 73.18°W (Elev. 30 ft)
Last Update:
1:31 am EST Feb 9, 2026
Forecast Valid:
6am EST Feb 9, 2026-6pm EST Feb 15, 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