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

16°C

60°F

Humidity 80%
Wind Speed W 9 km/h
Barometer 1010.7 mb (29.85 in)
Dewpoint 12°C (54°F)
Visibility 16 km
Last update 29 May 2:56 am EDT
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

  • Overnight

    Overnight: Mostly clear, with a low around 16. West wind around 10 km/h.

    Low: 16 °C

    Mostly Clear

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 25. West wind 11 to 13 km/h.

    High: 25 °C

    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers and thunderstorms, mainly after 8pm. Mostly cloudy, with a low around 14. West wind 5 to 10 km/h becoming north after midnight.

    Low: 14 °C

    Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers and thunderstorms. Mostly cloudy, with a high near 23. North wind 13 to 16 km/h. Chance of precipitation is 20%.

    High: 23 °C

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 13. West wind around 11 km/h becoming northwest after midnight.

    Low: 13 °C

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 23.

    High: 23 °C

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 13.

    Low: 13 °C

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 24.

    High: 24 °C

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 14.

    Low: 14 °C

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 16. West wind around 10 km/h.
Wednesday
A 20 percent chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 25. West wind 11 to 13 km/h.
Wednesday Night
A 50 percent chance of showers and thunderstorms, mainly after 8pm. Mostly cloudy, with a low around 14. West wind 5 to 10 km/h becoming north after midnight.
Thursday
A slight chance of showers and thunderstorms. Mostly cloudy, with a high near 23. North wind 13 to 16 km/h. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 13. West wind around 11 km/h becoming northwest after midnight.
Friday
Mostly sunny, with a high near 23.
Friday Night
Partly cloudy, with a low around 13.
Saturday
Sunny, with a high near 24.
Saturday Night
Mostly clear, with a low around 14.
Sunday
Mostly sunny, with a high near 25.
Sunday Night
Partly cloudy, with a low around 16.
Monday
Mostly sunny, with a high near 26.
Monday Night
Partly cloudy, with a low around 16.
Tuesday
Mostly sunny, with a high near 25.
Click Map For Forecast
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Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
 40.81°N 73.11°W (Elev. 98 m)
Last Update:
10:08 pm EDT May 28, 2024
Forecast Valid:
3am EDT May 29, 2024-6pm EDT Jun 4, 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