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.

Mostly Cloudy

79°F

26°C

Humidity 39%
Wind Speed W 14 G 22 mph
Barometer 29.65 in (1004.0 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 19 Jun 1:56 pm EDT
Extended Forecast for

East Islip NY

  • Juneteenth

    Juneteenth: Partly sunny, with a high near 76. West wind around 15 mph, with gusts as high as 26 mph.

    High: 76 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 65. West wind 9 to 14 mph.

    Low: 65 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 78. West wind 16 to 18 mph, with gusts as high as 30 mph.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy during the early evening, then becoming clear, with a low around 64. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 64 °F

    Clear

  • Sunday

    Sunday: Increasing clouds, with a high near 79. Southwest wind 6 to 10 mph.

    High: 79 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 65.

    Low: 65 °F

    Mostly Cloudy

  • Monday

    Monday: Showers and possibly a thunderstorm. High near 74. Chance of precipitation is 90%.

    High: 74 °F

    Showers

  • Monday Night

    Monday Night: Showers, mainly before 2am. Low around 65. Breezy. Chance of precipitation is 80%.

    Low: 65 °F

    Showers and
    Breezy

  • Tuesday

    Tuesday: A 30 percent chance of showers before 8am. Mostly sunny, with a high near 76.

    High: 76 °F

    Chance
    Showers then
    Mostly Sunny

Detailed Forecast

Juneteenth
Partly sunny, with a high near 76. West wind around 15 mph, with gusts as high as 26 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 65. West wind 9 to 14 mph.
Saturday
Sunny, with a high near 78. West wind 16 to 18 mph, with gusts as high as 30 mph.
Saturday Night
Mostly cloudy during the early evening, then becoming clear, with a low around 64. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday
Increasing clouds, with a high near 79. Southwest wind 6 to 10 mph.
Sunday Night
Mostly cloudy, with a low around 65.
Monday
Showers and possibly a thunderstorm. High near 74. Chance of precipitation is 90%.
Monday Night
Showers, mainly before 2am. Low around 65. Breezy. Chance of precipitation is 80%.
Tuesday
A 30 percent chance of showers before 8am. Mostly sunny, with a high near 76.
Tuesday Night
Mostly clear, with a low around 65.
Wednesday
Sunny, with a high near 75.
Wednesday Night
Partly cloudy, with a low around 65.
Thursday
Mostly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
East Islip NY
 40.7°N 73.19°W (Elev. 0 ft)
Last Update:
2:35 pm EDT Jun 19, 2026
Forecast Valid:
2pm EDT Jun 19, 2026-6pm EDT Jun 25, 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