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.

Fair

60°F

16°C

Humidity 90%
Wind Speed SW 5 mph
Barometer 29.97 in (1014.7 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 22 May 2:56 am EDT
Extended Forecast for

Islip NY

  • Overnight

    Overnight: Mostly clear, with a low around 55. Southwest wind around 7 mph.

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 73. South wind 7 to 15 mph.

    High: 73 °F

    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers after midnight. Increasing clouds, with a low around 59. Southwest wind 7 to 15 mph.

    Low: 59 °F

    Mostly Clear
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 78. Southwest wind 7 to 10 mph.

    High: 78 °F

    Chance
    T-storms

  • Thursday Night

    Thursday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Southwest wind 5 to 7 mph.

    Low: 61 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Saturday

    Saturday: A 30 percent chance of showers after 2pm. Mostly cloudy, with a high near 71.

    High: 71 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 58.

    Low: 58 °F

    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 55. Southwest wind around 7 mph.
Wednesday
Sunny, with a high near 73. South wind 7 to 15 mph.
Wednesday Night
A 20 percent chance of showers after midnight. Increasing clouds, with a low around 59. Southwest wind 7 to 15 mph.
Thursday
A 40 percent chance of showers and thunderstorms, mainly after 2pm. Partly sunny, with a high near 78. Southwest wind 7 to 10 mph.
Thursday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Southwest wind 5 to 7 mph.
Friday
Mostly sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 58.
Saturday
A 30 percent chance of showers after 2pm. Mostly cloudy, with a high near 71.
Saturday Night
A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 58.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 57.
Memorial Day
A 40 percent chance of showers. Mostly cloudy, with a high near 71.
Monday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 56.
Tuesday
A 30 percent chance of showers. Mostly cloudy, with a high near 69.
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ABOUT THIS FORECAST

 
Point Forecast:
Islip NY
 40.73°N 73.22°W (Elev. 7 ft)
Last Update:
9:51 pm EDT May 21, 2024
Forecast Valid:
3am EDT May 22, 2024-6pm EDT May 28, 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