Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Light Snow Blowing Snow and Windy

12°F

-11°C

Humidity 58%
Wind Speed NW 29 G 49 mph
Barometer 29.70 in (1005.9 mb)
Dewpoint 0°F (-18°C)
Visibility 2.00 mi
Wind Chill-9°F (-23°C)
Last update 7 Feb 3:56 pm EST
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

Wind Advisory February 7, 04:43pm until February 8, 12:00am
Extreme Cold Warning February 7, 04:43pm until February 8, 01:00pm
Click here for hazard details and duration
Wind Advisory
Extreme Cold Warning
  •  
    Wind Advisory February 7, 04:43pm until February 8, 12:00am
    Extreme Cold Warning February 7, 04:43pm until February 8, 01:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 12 °F

    Chance Snow
    and Windy

  • Tonight

    Tonight: A 30 percent chance of snow before 7pm.  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 21 to 28 mph, with gusts as high as 50 mph.

    Low: 4 °F

    Chance Snow
    and Windy
    then Partly
    Cloudy and
    Blustery

  • Sunday

    Sunday: Sunny and cold, with a high near 19. Wind chill values between -5 and -15. Blustery, with a northwest wind 17 to 21 mph, with gusts as high as 31 mph.

    High: 19 °F

    Cold and
    Blustery

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 7. Wind chill values between -5 and zero. Northwest wind 11 to 15 mph.

    Low: 7 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 28. Northwest wind 9 to 11 mph.

    High: 28 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 36.

    High: 36 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
A 30 percent chance of snow. Cloudy and cold, with a steady temperature around 12. Wind chill values between -5 and -10. Windy, with a northwest wind around 26 mph, with gusts as high as 49 mph.
Tonight
A 30 percent chance of snow before 7pm. 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 21 to 28 mph, with gusts as high as 50 mph.
Sunday
Sunny and cold, with a high near 19. Wind chill values between -5 and -15. Blustery, with a northwest wind 17 to 21 mph, with gusts as high as 31 mph.
Sunday Night
Mostly clear, with a low around 7. Wind chill values between -5 and zero. Northwest wind 11 to 15 mph.
Monday
Sunny, with a high near 28. Northwest wind 9 to 11 mph.
Monday Night
Mostly cloudy, with a low around 16.
Tuesday
Mostly cloudy, with a high near 36.
Tuesday Night
Mostly cloudy, with a low around 27.
Wednesday
Partly sunny, with a high near 38.
Wednesday Night
Mostly clear, with a low around 23.
Thursday
Mostly sunny, with a high near 34.
Thursday Night
Partly cloudy, with a low around 21.
Friday
Partly sunny, with a high near 33.
Friday Night
Mostly cloudy, with a low around 22.
Saturday
Mostly sunny, with a high near 35.
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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)
4:23 pm EST Feb 7, 2026
4pm EST Feb 7, 2026-6pm EST Feb 14, 2026
 
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Additional Resources

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