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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ABOUT THIS FORECAST

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