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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.

17°F

-8°C

Humidity 49%
Wind Speed NW 20 G 33 mph
Barometer 29.93 in (1013.8 mb)
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Wind Chill0°F (-18°C)
Last update 27 Jan 12:56 am EST
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

  • Overnight

    Overnight: Mostly clear, with a steady temperature around 15. Wind chill values between zero and 5. West wind 15 to 17 mph, with gusts as high as 29 mph.

    Low: 15 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 22. Wind chill values between zero and 10. West wind 9 to 15 mph, with gusts as high as 25 mph.

    High: 22 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 9. Wind chill values between -5 and 5. West wind 8 to 10 mph, with gusts as high as 24 mph.

    Low: 9 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 23. Wind chill values between -5 and 5. West wind 6 to 9 mph, with gusts as high as 20 mph.

    High: 23 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 10. West wind 3 to 6 mph.

    Low: 10 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 21.

    High: 21 °F

    Mostly Sunny

  • Thursday Night

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

    Low: 7 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny and cold, with a high near 20.

    High: 20 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around 6.

    Low: 6 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a steady temperature around 15. Wind chill values between zero and 5. West wind 15 to 17 mph, with gusts as high as 29 mph.
Tuesday
Increasing clouds, with a high near 22. Wind chill values between zero and 10. West wind 9 to 15 mph, with gusts as high as 25 mph.
Tuesday Night
Mostly clear, with a low around 9. Wind chill values between -5 and 5. West wind 8 to 10 mph, with gusts as high as 24 mph.
Wednesday
Mostly sunny, with a high near 23. Wind chill values between -5 and 5. West wind 6 to 9 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly cloudy, with a low around 10. West wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 21.
Thursday Night
Mostly clear, with a low around 7.
Friday
Mostly sunny and cold, with a high near 20.
Friday Night
Partly cloudy, with a low around 6.
Saturday
Partly sunny, with a high near 24.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 15.
Sunday
A 50 percent chance of snow. Mostly cloudy, with a high near 28.
Sunday Night
Mostly cloudy, with a low around 18.
Monday
Mostly sunny, with a high near 31.
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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:
1:34 am EST Jan 27, 2026
Forecast Valid:
1am EST Jan 27, 2026-6pm EST Feb 2, 2026
 
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