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.

Mostly Cloudy

68°F

20°C

Humidity 68%
Wind Speed SW 6 mph
Barometer 29.93 in (1013.3 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 11 Jun 6:56 pm EDT
Extended Forecast for

Islandia NY

  • Tonight

    Tonight: A 20 percent chance of showers before 9pm. Partly cloudy, with a low around 61. South wind 5 to 7 mph becoming calm in the evening.

    Low: 61 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 79. Light and variable wind becoming southwest 5 to 8 mph in the morning.

    High: 79 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 63. South wind 5 to 7 mph.

    Low: 63 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 83. Southwest wind 6 to 13 mph.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 66. Southwest wind 10 to 13 mph.

    Low: 66 °F

    Partly Cloudy

  • Friday

    Friday: Showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 83. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Mostly Sunny
    then Showers
    Likely

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 62. Chance of precipitation is 60%.

    Low: 62 °F

    Showers
    Likely then
    Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Tonight
A 20 percent chance of showers before 9pm. Partly cloudy, with a low around 61. South wind 5 to 7 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 79. Light and variable wind becoming southwest 5 to 8 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 63. South wind 5 to 7 mph.
Thursday
Sunny, with a high near 83. Southwest wind 6 to 13 mph.
Thursday Night
Partly cloudy, with a low around 66. Southwest wind 10 to 13 mph.
Friday
Showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 83. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, then gradually becoming mostly clear, with a low around 62. Chance of precipitation is 60%.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 60.
Sunday
Sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 61.
Monday
Mostly sunny, with a high near 81.
Monday Night
Partly cloudy, with a low around 67.
Tuesday
Mostly sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Islandia NY
 40.81°N 73.17°W (Elev. 161 ft)
Last Update:
5:46 pm EDT Jun 11, 2024
Forecast Valid:
7pm EDT Jun 11, 2024-6pm EDT Jun 18, 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