National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

72°F

22°C

Humidity 43%
Wind Speed N 7 mph
Barometer 30.07 in (1018.1 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 13 Jun 3:56 am EDT
Extended Forecast for

East Islip NY

  • Overnight

    Overnight: A 20 percent chance of showers after 5am. Mostly cloudy, with a low around 64. Light northeast wind.

    Low: 64 °F

    Slight Chance
    Showers

  • Friday

    Friday: Mostly cloudy, with a high near 75. Light and variable wind becoming southeast 5 to 8 mph in the morning.

    High: 75 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms, then showers likely after 2am. Mostly cloudy, with a low around 61. East wind around 6 mph. Chance of precipitation is 70%.

    Low: 61 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers likely, mainly before 2pm. Cloudy, with a high near 67. Northeast wind 8 to 11 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 67 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A 30 percent chance of showers, mainly before 2am. Cloudy, with a low around 57. Northeast wind 7 to 9 mph.

    Low: 57 °F

    Chance
    Showers

  • Sunday

    Sunday: Mostly cloudy, with a high near 67.

    High: 67 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A 30 percent chance of showers after 8pm. Cloudy, with a low around 59.

    Low: 59 °F

    Chance
    Showers

  • Monday

    Monday: A 40 percent chance of showers. Mostly cloudy, with a high near 69.

    High: 69 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 60.

    Low: 60 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers after 5am. Mostly cloudy, with a low around 64. Light northeast wind.
Friday
Mostly cloudy, with a high near 75. Light and variable wind becoming southeast 5 to 8 mph in the morning.
Friday Night
A slight chance of showers and thunderstorms, then showers likely after 2am. Mostly cloudy, with a low around 61. East wind around 6 mph. Chance of precipitation is 70%.
Saturday
Showers likely, mainly before 2pm. Cloudy, with a high near 67. Northeast wind 8 to 11 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
A 30 percent chance of showers, mainly before 2am. Cloudy, with a low around 57. Northeast wind 7 to 9 mph.
Sunday
Mostly cloudy, with a high near 67.
Sunday Night
A 30 percent chance of showers after 8pm. Cloudy, with a low around 59.
Monday
A 40 percent chance of showers. Mostly cloudy, with a high near 69.
Monday Night
Mostly cloudy, with a low around 60.
Tuesday
Mostly cloudy, with a high near 74.
Tuesday Night
Mostly cloudy, with a low around 63.
Wednesday
Mostly cloudy, with a high near 76.
Wednesday Night
Mostly cloudy, with a low around 65.
Juneteenth
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
East Islip NY
 40.73°N 73.19°W (Elev. 16 ft)
Last Update:
3:44 am EDT Jun 13, 2025
Forecast Valid:
4am EDT Jun 13, 2025-6pm EDT Jun 19, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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