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

63°F

17°C

Humidity 70%
Wind Speed SW 8 mph
Barometer 29.89 in (1012.1 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 15 Apr 10:56 pm EDT
Extended Forecast for

Patchogue NY

  • Tonight

    Tonight: A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 53. South wind 3 to 6 mph.

    Low: 53 °F

    Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 73. Southwest wind 5 to 10 mph.

    High: 73 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 54. Southwest wind 5 to 8 mph.

    Low: 54 °F

    Mostly Cloudy

  • Friday

    Friday: A 40 percent chance of showers, mainly after 2pm. Partly sunny, with a high near 71. West wind 3 to 7 mph.

    High: 71 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 49. Light northeast wind.

    Low: 49 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 58.

    High: 58 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly after 8am. Cloudy, with a high near 57. Chance of precipitation is 70%.

    High: 57 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 37.

    Low: 37 °F

    Chance
    Showers

Detailed Forecast

Tonight
A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 53. South wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 73. Southwest wind 5 to 10 mph.
Thursday Night
Mostly cloudy, with a low around 54. Southwest wind 5 to 8 mph.
Friday
A 40 percent chance of showers, mainly after 2pm. Partly sunny, with a high near 71. West wind 3 to 7 mph.
Friday Night
A 30 percent chance of showers before 8pm. Mostly cloudy, with a low around 49. Light northeast wind.
Saturday
Partly sunny, with a high near 58.
Saturday Night
A 30 percent chance of showers after 2am. Mostly cloudy, with a low around 46.
Sunday
Showers likely, mainly after 8am. Cloudy, with a high near 57. Chance of precipitation is 70%.
Sunday Night
A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 37.
Monday
Mostly sunny, with a high near 49.
Monday Night
Mostly clear, with a low around 34.
Tuesday
Sunny, with a high near 52.
Tuesday Night
Partly cloudy, with a low around 43.
Wednesday
Partly sunny, with a high near 61.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Patchogue NY
 40.77°N 73°W (Elev. 43 ft)
Last Update:
7:26 pm EDT Apr 15, 2026
Forecast Valid:
11pm EDT Apr 15, 2026-6pm EDT Apr 22, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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