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Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast and Breezy

13°F

-11°C

Humidity 64%
Wind Speed N 23 G 32 mph
Barometer 29.82 in (1010.0 mb)
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill-6°F (-21°C)
Last update 1 Feb 4:56 am EST
Extended Forecast for

5 Miles SSE Blue Point NY

Coastal Flood Advisory until February 1, 12:00pm
Cold Weather Advisory February 1, 05:55am until February 1, 10:00am
Click here for hazard details and duration
Coastal Flood Advisory
Cold Weather Advisory
  •  
    Coastal Flood Advisory until February 1, 12:00pm
    Cold Weather Advisory February 1, 05:55am until February 1, 10:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Overnight

    Low: 16 °F

    Scattered
    Flurries and
    Windy

  • Sunday

    Sunday: Scattered flurries before 7am. Cloudy, with a high near 23. Wind chill values between -5 and 5. Windy, with a north wind 28 to 31 mph, with gusts as high as 43 mph.

    High: 23 °F

    Scattered
    Flurries and
    Windy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 17. Wind chill values between zero and 5. Windy, with a northwest wind 21 to 26 mph.

    Low: 17 °F

    Mostly Cloudy
    and Windy

  • Monday

    Monday: Sunny, with a high near 29. Wind chill values between zero and 10. Blustery, with a northwest wind 16 to 20 mph.

    High: 29 °F

    Mostly Sunny
    and Blustery
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 20. Northwest wind 11 to 14 mph.

    Low: 20 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 31.

    High: 31 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 30.

    High: 30 °F

    Partly Sunny

Detailed Forecast

Overnight
Scattered flurries. Cloudy, with a low around 16. Wind chill values between zero and 5. Windy, with a north wind around 29 mph.
Sunday
Scattered flurries before 7am. Cloudy, with a high near 23. Wind chill values between -5 and 5. Windy, with a north wind 28 to 31 mph, with gusts as high as 43 mph.
Sunday Night
Mostly cloudy, with a low around 17. Wind chill values between zero and 5. Windy, with a northwest wind 21 to 26 mph.
Monday
Sunny, with a high near 29. Wind chill values between zero and 10. Blustery, with a northwest wind 16 to 20 mph.
Monday Night
Mostly clear, with a low around 20. Northwest wind 11 to 14 mph.
Tuesday
Sunny, with a high near 31.
Tuesday Night
Mostly cloudy, with a low around 25.
Wednesday
Partly sunny, with a high near 30.
Wednesday Night
Partly cloudy, with a low around 20.
Thursday
Sunny, with a high near 28.
Thursday Night
Partly cloudy, with a low around 20.
Friday
A 30 percent chance of snow. Mostly cloudy, with a high near 32.
Friday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 18. Blustery.
Saturday
Mostly sunny, with a high near 24. Windy.
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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:
4:21 am EST Feb 1, 2026
Forecast Valid:
5am EST Feb 1, 2026-6pm EST Feb 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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