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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.

Fair and Windy

5°F

-15°C

Humidity 47%
Wind Speed NW 26 G 45 mph
Barometer 30.00 in (1016.1 mb)
Dewpoint -11°F (-24°C)
Visibility 10.00 mi
Wind Chill-18°F (-28°C)
Last update 8 Feb 1:56 am EST
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

Cold Weather Advisory February 8, 01:00pm until February 9, 10:00am
Extreme Cold Warning February 8, 02:37am until February 8, 01:00pm
Click here for hazard details and duration
Cold Weather Advisory
Extreme Cold Warning
  •  
    Extreme Cold Warning February 8, 02:37am until February 8, 01:00pm

    NOW until 1:00pm Sun

    Extreme Cold Warning

  • Overnight

    Low: 3 °F

    Mostly Clear
    and Blustery

  • Sunday

    Sunday: Sunny and cold, with a high near 17. Wind chill values between -5 and -15. Northwest wind around 18 mph, with gusts as high as 33 mph.

    High: 17 °F

    Cold

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 7. Wind chill values between -5 and zero. Northwest wind 9 to 15 mph, with gusts as high as 28 mph.

    Low: 7 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 29. Wind chill values between -5 and 5. Northwest wind 7 to 10 mph.

    High: 29 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 14. Light northwest wind.

    Low: 14 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 35.

    High: 35 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A 30 percent chance of snow before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 27.

    Low: 27 °F

    Chance Snow

  • Wednesday

    Wednesday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

Detailed Forecast

Overnight
Mostly clear, with a low around 3. Wind chill values between -10 and -15. Blustery, with a northwest wind 18 to 20 mph, with gusts as high as 36 mph.
Sunday
Sunny and cold, with a high near 17. Wind chill values between -5 and -15. Northwest wind around 18 mph, with gusts as high as 33 mph.
Sunday Night
Mostly clear, with a low around 7. Wind chill values between -5 and zero. Northwest wind 9 to 15 mph, with gusts as high as 28 mph.
Monday
Sunny, with a high near 29. Wind chill values between -5 and 5. Northwest wind 7 to 10 mph.
Monday Night
Partly cloudy, with a low around 14. Light northwest wind.
Tuesday
Mostly cloudy, with a high near 35.
Tuesday Night
A 30 percent chance of snow before 1am. Cloudy, then gradually becoming partly cloudy, with a low around 27.
Wednesday
Mostly sunny, with a high near 36.
Wednesday Night
Mostly clear, with a low around 22.
Thursday
Partly sunny, with a high near 33.
Thursday Night
Partly cloudy, with a low around 20.
Friday
Partly sunny, with a high near 34.
Friday Night
Mostly cloudy, with a low around 21.
Saturday
Mostly sunny, with a high near 35.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
 40.78°N 73.09°W (Elev. 49 ft)
Last Update:
2:11 am EST Feb 8, 2026
Forecast Valid:
2am EST Feb 8, 2026-6pm EST Feb 14, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation