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.

Partly Cloudy

69°F

21°C

Humidity 76%
Wind Speed S 14 G 21 mph
Barometer 29.52 in (999.7 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 8 May 4:56 pm EDT
Extended Forecast for

Islandia NY

  • Tonight

    Tonight: Partly cloudy, with a low around 56. Southwest wind 5 to 9 mph becoming northwest in the evening.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 68. North wind around 7 mph becoming northeast in the afternoon. Chance of precipitation is 60%.

    High: 68 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely. Cloudy, with a low around 48. East wind around 11 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Showers
    Likely

  • Friday

    Friday: Showers likely. Cloudy, with a high near 55. East wind around 11 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 55 °F

    Showers
    Likely

  • Friday Night

    Friday Night: A 40 percent chance of showers, mainly before 2am. Mostly cloudy, with a low around 46. Northeast wind around 9 mph.

    Low: 46 °F

    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance
    Showers

  • Sunday

    Sunday: A 30 percent chance of showers. Mostly cloudy, with a high near 59.

    High: 59 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 56. Southwest wind 5 to 9 mph becoming northwest in the evening.
Thursday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 68. North wind around 7 mph becoming northeast in the afternoon. Chance of precipitation is 60%.
Thursday Night
Showers likely. Cloudy, with a low around 48. East wind around 11 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Showers likely. Cloudy, with a high near 55. East wind around 11 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A 40 percent chance of showers, mainly before 2am. Mostly cloudy, with a low around 46. Northeast wind around 9 mph.
Saturday
Partly sunny, with a high near 57.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 46.
Sunday
A 30 percent chance of showers. Mostly cloudy, with a high near 59.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Sunny, with a high near 67.
Monday Night
Partly cloudy, with a low around 52.
Tuesday
Partly sunny, with a high near 68.
Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 53.
Wednesday
A 30 percent chance of showers. Mostly cloudy, with a high near 67.
Click Map For Forecast
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Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Islandia NY
 40.81°N 73.17°W (Elev. 161 ft)
Last Update:
3:31 pm EDT May 8, 2024
Forecast Valid:
6pm EDT May 8, 2024-6pm EDT May 15, 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