Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

A Few Clouds

84°F

29°C

Humidity 70%
Wind Speed S 9 mph
Barometer 29.82 in (1009.7 mb)
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 19 Jun 10:56 am EDT
Extended Forecast for

Central Islip NY

  • Juneteenth

    Juneteenth: A chance of thunderstorms after 5pm.  Sunny, with a high near 86. Southwest wind 6 to 8 mph, with gusts as high as 25 mph.  Chance of precipitation is 30%.

    High: 86 °F

    Chance
    T-storms

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms before 2am.  Cloudy, then gradually becoming partly cloudy, with a low around 68. West wind 7 to 14 mph, with gusts as high as 29 mph.

    Low: 68 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 83. West wind around 11 mph.

    High: 83 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 66. West wind 3 to 7 mph.

    Low: 66 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 85. Southwest wind 5 to 9 mph.

    High: 85 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 68.

    Low: 68 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 84.

    High: 84 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

Detailed Forecast

Juneteenth
A chance of thunderstorms after 5pm. Sunny, with a high near 86. Southwest wind 6 to 8 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Tonight
A 40 percent chance of showers and thunderstorms before 2am. Cloudy, then gradually becoming partly cloudy, with a low around 68. West wind 7 to 14 mph, with gusts as high as 29 mph.
Friday
Sunny, with a high near 83. West wind around 11 mph.
Friday Night
Mostly clear, with a low around 66. West wind 3 to 7 mph.
Saturday
Mostly sunny, with a high near 85. Southwest wind 5 to 9 mph.
Saturday Night
Mostly cloudy, with a low around 68.
Sunday
Partly sunny, with a high near 84.
Sunday Night
Partly cloudy, with a low around 68.
Monday
Sunny, with a high near 88.
Monday Night
Mostly clear, with a low around 71.
Tuesday
Sunny, with a high near 91.
Tuesday Night
Mostly clear, with a low around 73.
Wednesday
Sunny, with a high near 88.
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ABOUT THIS FORECAST

 
Point Forecast:
Central Islip NY
 40.79°N 73.2°W (Elev. 98 ft)
9:51 am EDT Jun 19, 2025
11am EDT Jun 19, 2025-6pm EDT Jun 25, 2025
 
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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