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

17°F

-8°C

Humidity 49%
Wind Speed NW 14 G 23 mph
Barometer 30.07 in (1018.4 mb)
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Wind Chill3°F (-16°C)
Last update 29 Jan 10:56 am EST
Extended Forecast for

5 Miles SSE Blue Point NY

Cold Weather Advisory January 30, 12:00am until January 30, 10:00am
Click here for hazard details and duration
Cold Weather Advisory

  • Today

    Today: Mostly sunny, with a high near 22. Wind chill values between 5 and 10. Breezy, with a west wind 16 to 20 mph.

    High: 22 °F

    Mostly Sunny
    and Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 11. Wind chill values between -5 and 5. Breezy, with a northwest wind around 23 mph.

    Low: 11 °F

    Mostly Clear
    and Breezy

  • Friday

    Friday: Mostly sunny and cold, with a high near 18. Wind chill values between -5 and zero. Breezy, with a west wind around 21 mph.

    High: 18 °F

    Cold and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 7. Wind chill values between -5 and zero. Blustery, with a northwest wind 10 to 20 mph.

    Low: 7 °F

    Partly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 21. North wind 10 to 14 mph.

    High: 21 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 40 percent chance of snow after 1am. Mostly cloudy, with a low around 18. Windy.

    Low: 18 °F

    Mostly Cloudy
    and Blustery
    then Chance
    Snow and
    Windy

  • Sunday

    Sunday: Snow likely, mainly before 1pm. Cloudy, with a high near 25. Windy. Chance of precipitation is 60%.

    High: 25 °F

    Snow Likely
    and Windy

  • Sunday Night

    Sunday Night: A 30 percent chance of snow before 1am. Mostly cloudy, with a low around 21. Windy.

    Low: 21 °F

    Chance Snow
    and Windy

  • Monday

    Monday: Mostly sunny, with a high near 31. Blustery.

    High: 31 °F

    Mostly Sunny
    and Blustery

Detailed Forecast

Today
Mostly sunny, with a high near 22. Wind chill values between 5 and 10. Breezy, with a west wind 16 to 20 mph.
Tonight
Mostly clear, with a low around 11. Wind chill values between -5 and 5. Breezy, with a northwest wind around 23 mph.
Friday
Mostly sunny and cold, with a high near 18. Wind chill values between -5 and zero. Breezy, with a west wind around 21 mph.
Friday Night
Partly cloudy, with a low around 7. Wind chill values between -5 and zero. Blustery, with a northwest wind 10 to 20 mph.
Saturday
Partly sunny, with a high near 21. North wind 10 to 14 mph.
Saturday Night
A 40 percent chance of snow after 1am. Mostly cloudy, with a low around 18. Windy.
Sunday
Snow likely, mainly before 1pm. Cloudy, with a high near 25. Windy. Chance of precipitation is 60%.
Sunday Night
A 30 percent chance of snow before 1am. Mostly cloudy, with a low around 21. Windy.
Monday
Mostly sunny, with a high near 31. Blustery.
Monday Night
Mostly clear, with a low around 23.
Tuesday
Mostly sunny, with a high near 32.
Tuesday Night
Partly cloudy, with a low around 24.
Wednesday
Mostly sunny, with a high near 30.
Basemap Options
Click map to change the forecast location
Loading map...
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:
1:43 am EST Jan 29, 2026
Forecast Valid:
11am EST Jan 29, 2026-6pm EST Feb 4, 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