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

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

61°F

16°C

Humidity 84%
Wind Speed SW 6 mph
Barometer 29.97 in (1014.7 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 10 May 8:56 pm EDT
Extended Forecast for

East Islip NY

  • Tonight

    Tonight: Showers likely, mainly before 5am. Mostly cloudy, with a low around 49. Light and variable wind becoming north 5 to 8 mph after midnight. Chance of precipitation is 70%.

    Low: 49 °F

    Showers
    Likely

  • Monday

    Monday: Partly sunny, with a high near 62. North wind around 6 mph becoming west in the afternoon.

    High: 62 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 46. Southwest wind 5 to 8 mph becoming north after midnight.

    Low: 46 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 64. North wind 6 to 9 mph becoming west in the afternoon.

    High: 64 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 49. South wind around 8 mph.

    Low: 49 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: A 40 percent chance of showers. Mostly cloudy, with a high near 62.

    High: 62 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers. Low around 52. Chance of precipitation is 90%.

    Low: 52 °F

    Showers

  • Thursday

    Thursday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 66. Chance of precipitation is 70%.

    High: 66 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 51.

    Low: 51 °F

    Chance
    Showers then
    Partly Cloudy

Detailed Forecast

Tonight
Showers likely, mainly before 5am. Mostly cloudy, with a low around 49. Light and variable wind becoming north 5 to 8 mph after midnight. Chance of precipitation is 70%.
Monday
Partly sunny, with a high near 62. North wind around 6 mph becoming west in the afternoon.
Monday Night
Partly cloudy, with a low around 46. Southwest wind 5 to 8 mph becoming north after midnight.
Tuesday
Sunny, with a high near 64. North wind 6 to 9 mph becoming west in the afternoon.
Tuesday Night
Increasing clouds, with a low around 49. South wind around 8 mph.
Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 62.
Wednesday Night
Showers. Low around 52. Chance of precipitation is 90%.
Thursday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 66. Chance of precipitation is 70%.
Thursday Night
A 30 percent chance of showers before 8pm. Partly cloudy, with a low around 51.
Friday
Mostly sunny, with a high near 68.
Friday Night
Partly cloudy, with a low around 53.
Saturday
Mostly sunny, with a high near 72.
Saturday Night
Partly cloudy, with a low around 55.
Sunday
Mostly sunny, with a high near 73.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
East Islip NY
 40.73°N 73.19°W (Elev. 16 ft)
Last Update:
8:48 pm EDT May 10, 2026
Forecast Valid:
9pm EDT May 10, 2026-6pm EDT May 17, 2026
 
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