Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

20°F

-7°C

Humidity 71%
Wind Speed NE 7 mph
Barometer 29.79 in (1008.9 mb)
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 6 Feb 5:56 am EST
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

Wind Advisory February 7, 09:00am until February 8, 12:00am
Extreme Cold Warning February 7, 01:00pm until February 8, 01:00pm
Click here for hazard details and duration
Wind Advisory
Extreme Cold Warning
  • Today

    Today: Mostly cloudy, with a high near 32. Wind chill values between 5 and 15. North wind 5 to 7 mph becoming light and variable  in the afternoon.

    High: 32 °F

    Mostly Cloudy

  • Tonight

    Tonight: Snow, mainly after 1am.  Low around 21. Calm wind becoming west around 5 mph after midnight.  Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 21 °F

    Chance Snow
    then Snow

  • Saturday

    Saturday: Snow, mainly before 1pm.  Temperature falling to around 14 by 5pm. Wind chill values between -5 and 5. Windy, with a northwest wind 13 to 18 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 49 mph.  Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    High: 23 °F

    Snow and
    Windy

  • Saturday Night

    Saturday Night: Cloudy during the early evening, then gradual clearing, with a low around 4. Wind chill values between -10 and -15. Windy, with a northwest wind 18 to 26 mph, with gusts as high as 49 mph.

    Low: 4 °F

    Gradual
    Clearing and
    Windy

  • Sunday

    Sunday: Sunny and cold, with a high near 18. Blustery, with a northwest wind 17 to 20 mph, with gusts as high as 33 mph.

    High: 18 °F

    Cold and
    Blustery

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 7.

    Low: 7 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 24.

    High: 24 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 13.

    Low: 13 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 31.

    High: 31 °F

    Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 32. Wind chill values between 5 and 15. North wind 5 to 7 mph becoming light and variable in the afternoon.
Tonight
Snow, mainly after 1am. Low around 21. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Saturday
Snow, mainly before 1pm. Temperature falling to around 14 by 5pm. Wind chill values between -5 and 5. Windy, with a northwest wind 13 to 18 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 49 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Saturday Night
Cloudy during the early evening, then gradual clearing, with a low around 4. Wind chill values between -10 and -15. Windy, with a northwest wind 18 to 26 mph, with gusts as high as 49 mph.
Sunday
Sunny and cold, with a high near 18. Blustery, with a northwest wind 17 to 20 mph, with gusts as high as 33 mph.
Sunday Night
Mostly clear, with a low around 7.
Monday
Mostly sunny, with a high near 24.
Monday Night
Partly cloudy, with a low around 13.
Tuesday
Sunny, with a high near 31.
Tuesday Night
Mostly cloudy, with a low around 21.
Wednesday
A chance of rain and snow. Mostly cloudy, with a high near 35. Chance of precipitation is 40%.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 23. Chance of precipitation is 30%.
Thursday
Mostly cloudy, with a high near 34.
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ABOUT THIS FORECAST

 
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
 40.81°N 73.11°W (Elev. 98 ft)
2:05 am EST Feb 6, 2026
6am EST Feb 6, 2026-6pm EST Feb 12, 2026
 
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