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.

A Few Clouds

82°F

28°C

Humidity 40%
Wind Speed W 5 mph
Barometer 30.05 in (1017.5 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 17 May 11:56 am EDT
Extended Forecast for

East Islip NY

  • This Afternoon

    This Afternoon: Sunny, with a steady temperature around 76. Southwest wind 7 to 13 mph.

    High: 76 °F

    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 60. Southwest wind 5 to 8 mph becoming calm in the evening.

    Low: 60 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 74. Light east wind becoming southeast 5 to 9 mph in the morning.

    High: 74 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 60. Southwest wind 5 to 7 mph.

    Low: 60 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 77. Southwest wind 8 to 14 mph.

    High: 77 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers likely after 2pm. Sunny, then becoming mostly cloudy during the afternoon, with a high near 80. Chance of precipitation is 70%.

    High: 80 °F

    Sunny then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 55. Chance of precipitation is 60%.

    Low: 55 °F

    Showers
    Likely

  • Thursday

    Thursday: Partly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a steady temperature around 76. Southwest wind 7 to 13 mph.
Tonight
Partly cloudy, with a low around 60. Southwest wind 5 to 8 mph becoming calm in the evening.
Monday
Mostly sunny, with a high near 74. Light east wind becoming southeast 5 to 9 mph in the morning.
Monday Night
Partly cloudy, with a low around 60. Southwest wind 5 to 7 mph.
Tuesday
Sunny, with a high near 77. Southwest wind 8 to 14 mph.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
Showers likely after 2pm. Sunny, then becoming mostly cloudy during the afternoon, with a high near 80. Chance of precipitation is 70%.
Wednesday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 55. Chance of precipitation is 60%.
Thursday
Partly sunny, with a high near 69.
Thursday Night
Mostly cloudy, with a low around 52.
Friday
Partly sunny, with a high near 64.
Friday Night
Mostly cloudy, with a low around 51.
Saturday
A 40 percent chance of showers. Mostly cloudy, with a high near 65.
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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:
5:34 am EDT May 17, 2026
Forecast Valid:
12pm EDT May 17, 2026-6pm EDT May 23, 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