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 48%
Wind Speed N 17 mph
Barometer 30.19 in (1022.5 mb)
Dewpoint -5°F (-21°C)
Visibility 10.00 mi
Wind Chill-6°F (-21°C)
Last update 9 Feb 2:56 am EST
Extended Forecast for

5 Miles SSE Blue Point NY

Cold Weather Advisory February 9, 03:54am until February 9, 10:00am
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory February 9, 03:54am until February 9, 10:00am

    NOW until 10:00am Mon

    Cold Weather Advisory

  • Overnight

    Low: 12 °F

    Mostly Clear
    and Blustery

  • 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: Mostly cloudy, with a low around 23. Wind chill values between 15 and 20. Northwest wind 6 to 13 mph.

    Low: 23 °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. Northwest wind 6 to 10 mph becoming south 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 31. South wind 10 to 13 mph becoming west after midnight. Chance of precipitation is 30%.

    Low: 31 °F

    Chance
    Rain/Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

  • Wednesday Night

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

    Low: 26 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around 12. Wind chill values between -5 and zero. Blustery, with a northwest wind 18 to 20 mph.
Monday
Sunny, with a high near 27. Wind chill values between -5 and 5. Northwest wind 14 to 18 mph.
Monday Night
Mostly cloudy, with a low around 23. Wind chill values between 15 and 20. Northwest wind 6 to 13 mph.
Tuesday
A 20 percent chance of snow after 1pm. Increasing clouds, with a high near 37. Wind chill values between 15 and 25. Northwest wind 6 to 10 mph becoming south 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 31. South wind 10 to 13 mph becoming west after midnight. Chance of precipitation is 30%.
Wednesday
Mostly sunny, with a high near 36.
Wednesday Night
Partly cloudy, with a low around 26.
Thursday
Mostly sunny, with a high near 32.
Thursday Night
Partly cloudy, with a low around 23.
Friday
Sunny, with a high near 32.
Friday Night
Mostly clear, with a low around 25.
Saturday
Sunny, with a high near 34.
Saturday Night
Partly cloudy, with a low around 27.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 36. Chance of precipitation is 30%.
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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:
1:31 am EST Feb 9, 2026
Forecast Valid:
3am EST Feb 9, 2026-6pm EST Feb 15, 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