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

16°C

61°F

Humidity 75%
Wind Speed SW 11 km/h
Barometer 1006.5 mb (29.72 in)
Dewpoint 12°C (53°F)
Visibility 16 km
Last update 7 May 11:56 pm EDT
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

  • Overnight

    Overnight: A 30 percent chance of showers after 5am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 12. South wind around 10 km/h.

    Low: 12 °C

    Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 11am, then a chance of showers and thunderstorms after 11am. Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 19. South wind 13 to 18 km/h. Chance of precipitation is 60%. New rainfall amounts between 2.5 and 5 mm possible.

    High: 19 °C

    Showers
    Likely and
    Patchy Fog
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 12. Southwest wind 8 to 11 km/h.

    Low: 12 °C

    Chance
    T-storms then
    Mostly Cloudy

  • Thursday

    Thursday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 18. East wind 10 to 18 km/h. Chance of precipitation is 60%. New precipitation amounts between 1 and 2.5 mm possible.

    High: 18 °C

    Chance
    Showers then
    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely, mainly before 2am. Mostly cloudy, with a low around 11. East wind 13 to 16 km/h. Chance of precipitation is 60%. New precipitation amounts between 1 and 2.5 mm possible.

    Low: 11 °C

    Showers
    Likely

  • Friday

    Friday: A 40 percent chance of showers. Mostly cloudy, with a high near 14.

    High: 14 °C

    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 9.

    Low: 9 °C

    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 17.

    High: 17 °C

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 9.

    Low: 9 °C

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
A 30 percent chance of showers after 5am. Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 12. South wind around 10 km/h.
Wednesday
A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 11am, then a chance of showers and thunderstorms after 11am. Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 19. South wind 13 to 18 km/h. Chance of precipitation is 60%. New rainfall amounts between 2.5 and 5 mm possible.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 12. Southwest wind 8 to 11 km/h.
Thursday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 18. East wind 10 to 18 km/h. Chance of precipitation is 60%. New precipitation amounts between 1 and 2.5 mm possible.
Thursday Night
Showers likely, mainly before 2am. Mostly cloudy, with a low around 11. East wind 13 to 16 km/h. Chance of precipitation is 60%. New precipitation amounts between 1 and 2.5 mm possible.
Friday
A 40 percent chance of showers. Mostly cloudy, with a high near 14.
Friday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 9.
Saturday
Partly sunny, with a high near 17.
Saturday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 9.
Sunday
A 30 percent chance of showers. Mostly cloudy, with a high near 17.
Sunday Night
Mostly cloudy, with a low around 9.
Monday
Mostly sunny, with a high near 19.
Monday Night
Partly cloudy, with a low around 11.
Tuesday
Mostly sunny, with a high near 20.
Click Map For Forecast
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Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
 40.78°N 73.09°W (Elev. 49 m)
Last Update:
10:01 pm EDT May 7, 2024
Forecast Valid:
12am EDT May 8, 2024-6pm EDT May 14, 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