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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.

Light Drizzle Fog

47°F

8°C

Humidity 97%
Wind Speed SW 14 mph
Barometer 29.45 in (997.3 mb)
Dewpoint 46°F (8°C)
Visibility 0.25 mi
Wind Chill41°F (5°C)
Last update 29 Dec 8:56 am EST
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

Dense Fog Advisory December 29, 11:32am until December 29, 12:00pm
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory December 29, 11:32am until December 29, 12:00pm

    NOW until 12:00pm Mon

    Dense Fog Advisory

  • Today

    High: 50 °F⇓

    Rain and
    Areas Fog

  • Tonight

    Tonight: Partly cloudy, with a low around 25. Wind chill values between 10 and 20. Breezy, with a west wind 17 to 22 mph, with gusts as high as 39 mph.

    Low: 25 °F

    Partly Cloudy
    and Breezy

  • Tuesday

    Tuesday: Partly sunny, with a high near 32. Wind chill values between 15 and 20. Breezy, with a west wind 20 to 22 mph, with gusts as high as 39 mph.

    High: 32 °F

    Partly Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 24. Wind chill values between 15 and 20. West wind 10 to 16 mph, with gusts as high as 30 mph.

    Low: 24 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 36. West wind 10 to 14 mph, with gusts as high as 25 mph.

    High: 36 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

  • New Year's Day

    New Year's Day: Partly sunny, with a high near 29.

    High: 29 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

Detailed Forecast

Today
Rain before 4pm. Areas of fog before 1pm. Temperature falling to around 41 by 5pm. West wind 14 to 18 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Partly cloudy, with a low around 25. Wind chill values between 10 and 20. Breezy, with a west wind 17 to 22 mph, with gusts as high as 39 mph.
Tuesday
Partly sunny, with a high near 32. Wind chill values between 15 and 20. Breezy, with a west wind 20 to 22 mph, with gusts as high as 39 mph.
Tuesday Night
Mostly cloudy, with a low around 24. Wind chill values between 15 and 20. West wind 10 to 16 mph, with gusts as high as 30 mph.
Wednesday
Partly sunny, with a high near 36. West wind 10 to 14 mph, with gusts as high as 25 mph.
Wednesday Night
Mostly cloudy, with a low around 20.
New Year's Day
Partly sunny, with a high near 29.
Thursday Night
Partly cloudy, with a low around 17.
Friday
Mostly sunny, with a high near 29.
Friday Night
Partly cloudy, with a low around 20.
Saturday
Partly sunny, with a high near 33.
Saturday Night
Mostly cloudy, with a low around 21.
Sunday
Mostly sunny, with a high near 31.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
 40.8°N 73.09°W (Elev. 98 ft)
Last Update:
8:56 am EST Dec 29, 2025
Forecast Valid:
11am EST Dec 29, 2025-6pm EST Jan 4, 2026
 
Forecast Discussion
 
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