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.

A Few Clouds

14°F

-10°C

Humidity 42%
Wind Speed NW 17 G 26 mph
Barometer 30.10 in (1019.4 mb)
Dewpoint -5°F (-21°C)
Visibility 10.00 mi
Wind Chill-2°F (-19°C)
Last update 30 Jan 12:56 pm EST
Extended Forecast for

5 Miles SSE Blue Point NY

Cold Weather Advisory January 30, 01:57pm until January 31, 10:00am
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory January 30, 01:57pm until January 31, 10:00am

    NOW until 10:00am Sat

    Cold Weather Advisory

  • This Afternoon

    High: 20 °F

    Cold and
    Blustery

  • Tonight

    Tonight: Partly cloudy, with a low around 9. Wind chill values between zero and 5. Northwest wind 8 to 16 mph.

    Low: 9 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 23. Wind chill values between zero and 10. North wind 7 to 9 mph.

    High: 23 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of snow after 1am. Cloudy, with a low around 16. Wind chill values between -5 and 5. Windy, with a north wind 11 to 21 mph increasing to 24 to 34 mph.

    Low: 16 °F

    Mostly Cloudy
    and Blustery
    then Chance
    Snow and
    Windy

  • Sunday

    Sunday: A 30 percent chance of snow, mainly before 1pm. Cloudy, with a high near 27. Windy, with a north wind 34 to 37 mph.

    High: 27 °F

    Chance Snow
    and Windy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 18. Windy.

    Low: 18 °F

    Mostly Cloudy
    and Windy

  • Monday

    Monday: Mostly sunny, with a high near 30. Blustery.

    High: 30 °F

    Mostly Sunny
    and Blustery

  • Monday Night

    Monday Night: Mostly clear, with a low around 21.

    Low: 21 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Mostly sunny and cold, with a high near 20. Wind chill values between zero and 5. Blustery, with a northwest wind around 22 mph.
Tonight
Partly cloudy, with a low around 9. Wind chill values between zero and 5. Northwest wind 8 to 16 mph.
Saturday
Mostly sunny, with a high near 23. Wind chill values between zero and 10. North wind 7 to 9 mph.
Saturday Night
A 30 percent chance of snow after 1am. Cloudy, with a low around 16. Wind chill values between -5 and 5. Windy, with a north wind 11 to 21 mph increasing to 24 to 34 mph.
Sunday
A 30 percent chance of snow, mainly before 1pm. Cloudy, with a high near 27. Windy, with a north wind 34 to 37 mph.
Sunday Night
Mostly cloudy, with a low around 18. Windy.
Monday
Mostly sunny, with a high near 30. Blustery.
Monday Night
Mostly clear, with a low around 21.
Tuesday
Sunny, with a high near 31.
Tuesday Night
Partly cloudy, with a low around 24.
Wednesday
Partly sunny, with a high near 30.
Wednesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 22.
Thursday
A 30 percent chance of snow. Partly sunny, with a high near 29.
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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:
1:28 pm EST Jan 30, 2026
Forecast Valid:
1pm EST Jan 30, 2026-6pm EST Feb 5, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation