Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Light Rain Fog/Mist

50°F

10°C

Humidity 89%
Wind Speed SW 8 mph
Barometer 29.66 in (1004.2 mb)
Dewpoint 47°F (8°C)
Visibility 6.00 mi
Wind Chill47°F (8°C)
Last update 27 Mar 3:56 am EDT
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

  • Overnight

    Overnight: Showers.  Steady temperature around 52. West wind around 10 mph, with gusts as high as 22 mph.  Chance of precipitation is 80%.

    Low: 52 °F

    Showers

  • Friday

    Friday: Showers likely, mainly before 8am.  Mostly cloudy, with a steady temperature around 48. North wind 11 to 14 mph.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 48 °F

    Showers
    Likely then
    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 30. North wind 5 to 8 mph.

    Low: 30 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 41. Wind chill values between 20 and 30. Northwest wind 9 to 13 mph.

    High: 41 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 28. Northwest wind around 5 mph becoming calm  in the evening.

    Low: 28 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 54.

    High: 54 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 42.

    Low: 42 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Showers. Steady temperature around 52. West wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.
Friday
Showers likely, mainly before 8am. Mostly cloudy, with a steady temperature around 48. North wind 11 to 14 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Mostly cloudy, with a low around 30. North wind 5 to 8 mph.
Saturday
Mostly sunny, with a high near 41. Wind chill values between 20 and 30. Northwest wind 9 to 13 mph.
Saturday Night
Partly cloudy, with a low around 28. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 46.
Sunday Night
Mostly cloudy, with a low around 39.
Monday
Partly sunny, with a high near 54.
Monday Night
Mostly cloudy, with a low around 42.
Tuesday
A 30 percent chance of rain. Partly sunny, with a high near 55.
Tuesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 43.
Wednesday
A 30 percent chance of rain. Partly sunny, with a high near 59.
Wednesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 46.
Thursday
A 30 percent chance of rain. Mostly cloudy, with a high near 59.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
 40.78°N 73.09°W (Elev. 49 ft)
2:20 am EDT Mar 27, 2026
4am EDT Mar 27, 2026-6pm EDT Apr 2, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database