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.

Light Drizzle Fog

68°F

20°C

Humidity 96%
Wind Speed Calm
Barometer 29.87 in (1011.4 mb)
Dewpoint 67°F (19°C)
Visibility 0.25 mi
Last update 18 Jun 11:56 pm EDT
Extended Forecast for

East Islip NY

  • Overnight

    Overnight: A 20 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 67. Light southwest wind.

    Low: 67 °F

    Slight Chance
    T-storms

  • Juneteenth

    Juneteenth: A chance of thunderstorms after 5pm. Partly sunny, with a high near 81. Southwest wind 6 to 16 mph. Chance of precipitation is 30%.

    High: 81 °F

    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A 40 percent chance of showers and thunderstorms before 2am. Cloudy, then gradually becoming partly cloudy, with a low around 66. Southwest wind 10 to 18 mph.

    Low: 66 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Sunny, with a high near 81. West wind around 11 mph.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 65. West wind 5 to 7 mph.

    Low: 65 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 67.

    Low: 67 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 81.

    High: 81 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 67. Light southwest wind.
Juneteenth
A chance of thunderstorms after 5pm. Partly sunny, with a high near 81. Southwest wind 6 to 16 mph. Chance of precipitation is 30%.
Thursday Night
A 40 percent chance of showers and thunderstorms before 2am. Cloudy, then gradually becoming partly cloudy, with a low around 66. Southwest wind 10 to 18 mph.
Friday
Sunny, with a high near 81. West wind around 11 mph.
Friday Night
Mostly clear, with a low around 65. West wind 5 to 7 mph.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Mostly cloudy, with a low around 67.
Sunday
Partly sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 67.
Monday
Sunny, with a high near 84.
Monday Night
Mostly clear, with a low around 70.
Tuesday
Sunny, with a high near 87.
Tuesday Night
Mostly clear, with a low around 72.
Wednesday
Sunny, with a high near 84.
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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:
7:33 pm EDT Jun 18, 2025
Forecast Valid:
12am EDT Jun 19, 2025-6pm EDT Jun 25, 2025
 
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