National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fair

50°F

10°C

Humidity 52%
Wind Speed NW 13 G 26 mph
Barometer 29.84 in (1010.6 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 6 Nov 4:56 am EST
Extended Forecast for

Islip NY

Frost Advisory November 7, 12:00am until November 7, 07:00am
Wind Advisory November 6, 05:00am until November 6, 08:00am
Click here for hazard details and duration
Frost Advisory
...
  •  
    Wind Advisory November 6, 05:00am until November 6, 08:00am

    NOW until 8:00am Thu

    Wind Advisory

  • Today

    High: 54 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 37. Northwest wind 5 to 10 mph becoming light west after midnight.

    Low: 37 °F

    Mostly Clear

  • Friday

    Friday: Areas of frost before 7am. Otherwise, partly sunny, with a high near 61. Breezy, with a light west wind becoming south 15 to 20 mph in the morning. Winds could gust as high as 31 mph.

    High: 61 °F

    Areas Frost
    then Partly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 52. South wind 10 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 52 °F

    Showers
    Likely

  • Saturday

    Saturday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 65. West wind 9 to 11 mph.

    High: 65 °F

    Slight Chance
    Showers

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

  • Sunday

    Sunday: Rain likely. Mostly cloudy, with a high near 63. Chance of precipitation is 70%.

    High: 63 °F

    Rain Likely

  • Sunday Night

    Sunday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 54. Northwest wind 15 to 18 mph, with gusts as high as 43 mph.
Tonight
Mostly clear, with a low around 37. Northwest wind 5 to 10 mph becoming light west after midnight.
Friday
Areas of frost before 7am. Otherwise, partly sunny, with a high near 61. Breezy, with a light west wind becoming south 15 to 20 mph in the morning. Winds could gust as high as 31 mph.
Friday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 52. South wind 10 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 65. West wind 9 to 11 mph.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Rain likely. Mostly cloudy, with a high near 63. Chance of precipitation is 70%.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 41.
Monday
Partly sunny, with a high near 50.
Monday Night
Partly cloudy, with a low around 32.
Veterans Day
Mostly sunny, with a high near 47.
Tuesday Night
Mostly cloudy, with a low around 37.
Wednesday
Mostly sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Islip NY
 40.73°N 73.22°W (Elev. 7 ft)
Last Update:
1:19 am EST Nov 6, 2025
Forecast Valid:
5am EST Nov 6, 2025-6pm EST Nov 12, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation