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 and Windy

13°F

-11°C

Humidity 42%
Wind Speed NW 26 G 37 mph
Barometer 30.07 in (1018.5 mb)
Dewpoint -6°F (-21°C)
Visibility 10.00 mi
Wind Chill-7°F (-22°C)
Last update 8 Feb 12:56 pm EST
Extended Forecast for

5 Miles SSE Blue Point NY

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

    NOW until 10:00am Mon

    Cold Weather Advisory

  • This Afternoon

    High: 17 °F

    Cold and
    Blustery

  • Tonight

    Tonight: Mostly clear, with a low around 13. Wind chill values between -5 and zero. Windy, with a northwest wind 21 to 26 mph.

    Low: 13 °F

    Mostly Clear
    and Windy

  • Monday

    Monday: Sunny, with a high near 27. Wind chill values between -5 and 5. Northwest wind 14 to 18 mph.

    High: 27 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 22. Wind chill values between 15 and 20. Northwest wind 7 to 13 mph.

    Low: 22 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A chance of snow after 1pm, mixing with rain after 4pm. Mostly cloudy, with a high near 36. Northwest wind 6 to 10 mph becoming south in the afternoon. Chance of precipitation is 30%.

    High: 36 °F

    Partly Sunny
    then Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A chance of rain and snow before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 31. Chance of precipitation is 30%.

    Low: 31 °F

    Chance
    Rain/Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 36. Breezy.

    High: 36 °F

    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 26. Blustery.

    Low: 26 °F

    Partly Cloudy
    and Blustery
    then Partly
    Cloudy

Detailed Forecast

This Afternoon
Mostly sunny and cold, with a high near 17. Wind chill values between -5 and -10. Blustery, with a northwest wind around 25 mph.
Tonight
Mostly clear, with a low around 13. Wind chill values between -5 and zero. Windy, with a northwest wind 21 to 26 mph.
Monday
Sunny, with a high near 27. Wind chill values between -5 and 5. Northwest wind 14 to 18 mph.
Monday Night
Increasing clouds, with a low around 22. Wind chill values between 15 and 20. Northwest wind 7 to 13 mph.
Tuesday
A chance of snow after 1pm, mixing with rain after 4pm. Mostly cloudy, with a high near 36. Northwest wind 6 to 10 mph becoming south in the afternoon. Chance of precipitation is 30%.
Tuesday Night
A chance of rain and snow before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 31. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 36. Breezy.
Wednesday Night
Partly cloudy, with a low around 26. Blustery.
Thursday
Mostly sunny, with a high near 33.
Thursday Night
Partly cloudy, with a low around 23.
Friday
Mostly sunny, with a high near 32.
Friday Night
Partly cloudy, with a low around 25.
Saturday
Sunny, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSE Blue Point NY
 40.68°N 72.99°W (Elev. 0 ft)
Last Update:
12:55 pm EST Feb 8, 2026
Forecast Valid:
1pm EST Feb 8, 2026-6pm EST Feb 14, 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