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.

Light Rain Fog/Mist and Breezy

59°F

15°C

Humidity 93%
Wind Speed NE 21 G 38 mph
Barometer 29.55 in (1000.6 mb)
Dewpoint 57°F (14°C)
Visibility 5.00 mi
Last update 16 May 2:56 am EDT
Extended Forecast for

Islandia NY

  • Overnight

    Overnight: Showers. Low around 55. Northeast wind around 18 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 55 °F

    Showers

  • Thursday

    Thursday: Showers likely, mainly before 8am. Cloudy, with a high near 63. Northeast wind 15 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 63 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before 2am. Mostly cloudy, with a low around 54. Northeast wind 9 to 11 mph, with gusts as high as 22 mph.

    Low: 54 °F

    Slight Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 72. Northeast wind around 9 mph.

    High: 72 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 52. East wind 3 to 6 mph.

    Low: 52 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 64.

    High: 64 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers before 8am. Mostly cloudy, with a high near 64.

    High: 64 °F

    Chance
    Showers then
    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Showers. Low around 55. Northeast wind around 18 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Showers likely, mainly before 8am. Cloudy, with a high near 63. Northeast wind 15 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A 20 percent chance of showers before 2am. Mostly cloudy, with a low around 54. Northeast wind 9 to 11 mph, with gusts as high as 22 mph.
Friday
Partly sunny, with a high near 72. Northeast wind around 9 mph.
Friday Night
Mostly cloudy, with a low around 52. East wind 3 to 6 mph.
Saturday
Mostly cloudy, with a high near 64.
Saturday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 51.
Sunday
A 30 percent chance of showers before 8am. Mostly cloudy, with a high near 64.
Sunday Night
Mostly cloudy, with a low around 51.
Monday
Partly sunny, with a high near 65.
Monday Night
Partly cloudy, with a low around 50.
Tuesday
Mostly sunny, with a high near 68.
Tuesday Night
Partly cloudy, with a low around 53.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 71.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Islandia NY
 40.81°N 73.17°W (Elev. 161 ft)
Last Update:
11:02 pm EDT May 15, 2024
Forecast Valid:
3am EDT May 16, 2024-6pm EDT May 22, 2024
 
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