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

22°F

-6°C

Humidity 55%
Wind Speed Calm
Barometer 29.96 in (1014.6 mb)
Dewpoint 8°F (-13°C)
Visibility 10.00 mi
Last update 5 Feb 6:56 pm EST
Extended Forecast for

5 Miles SSE Blue Point NY

Extreme Cold Watch February 7, 06:00pm until February 8, 01:00pm
Click here for hazard details and duration
Extreme Cold Watch

  • Tonight

    Tonight: Increasing clouds, with a low around 22. Wind chill values between 10 and 15. Northeast wind 6 to 10 mph.

    Low: 22 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly cloudy, with a high near 29. Wind chill values between 10 and 20. North wind 5 to 10 mph becoming light and variable in the afternoon.

    High: 29 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Snow, mainly after 1am. Steady temperature around 27. Wind chill values between 15 and 20. Calm wind becoming west 5 to 9 mph in the evening. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 27 °F

    Chance Snow
    then Snow

  • Saturday

    Saturday: Snow, mainly before 1pm. Temperature falling to around 18 by 5pm. Wind chill values between -5 and 5. Windy, with a northwest wind 14 to 24 mph increasing to 29 to 39 mph. Winds could gust as high as 55 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 25 °F⇓

    Snow and
    Windy

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 8. Very windy, with a northwest wind 33 to 43 mph.

    Low: 8 °F

    Decreasing
    Clouds and
    Very Windy

  • Sunday

    Sunday: Sunny and cold, with a high near 18. Windy.

    High: 18 °F

    Cold and
    Windy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 11. Blustery.

    Low: 11 °F

    Mostly Clear
    and Blustery

  • Monday

    Monday: Mostly sunny, with a high near 25.

    High: 25 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 22. Wind chill values between 10 and 15. Northeast wind 6 to 10 mph.
Friday
Mostly cloudy, with a high near 29. Wind chill values between 10 and 20. North wind 5 to 10 mph becoming light and variable in the afternoon.
Friday Night
Snow, mainly after 1am. Steady temperature around 27. Wind chill values between 15 and 20. Calm wind becoming west 5 to 9 mph in the evening. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Saturday
Snow, mainly before 1pm. Temperature falling to around 18 by 5pm. Wind chill values between -5 and 5. Windy, with a northwest wind 14 to 24 mph increasing to 29 to 39 mph. Winds could gust as high as 55 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 8. Very windy, with a northwest wind 33 to 43 mph.
Sunday
Sunny and cold, with a high near 18. Windy.
Sunday Night
Mostly clear, with a low around 11. Blustery.
Monday
Mostly sunny, with a high near 25.
Monday Night
Partly cloudy, with a low around 17.
Tuesday
Mostly sunny, with a high near 29.
Tuesday Night
Mostly cloudy, with a low around 24.
Wednesday
A 30 percent chance of rain. Partly sunny, with a high near 35.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 29.
Thursday
Partly sunny, with a high near 36.
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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:
1:09 pm EST Feb 5, 2026
Forecast Valid:
7pm EST Feb 5, 2026-6pm EST Feb 12, 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