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

79°F

26°C

Humidity 44%
Wind Speed N 9 mph
Barometer 30.06 in (1017.7 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 18 Jul 2:56 pm EDT
Extended Forecast for

Patchogue NY

  • Tonight

    Tonight: Partly cloudy, with a low around 64. Northwest wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 82. Light and variable wind becoming south 5 to 8 mph in the morning.

    High: 82 °F

    Sunny

  • Saturday Night

    Saturday Night: A chance of showers, with thunderstorms also possible after 11pm. Increasing clouds, with a low around 72. South wind around 6 mph. Chance of precipitation is 50%.

    Low: 72 °F

    Chance
    T-storms

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85. Southwest wind 6 to 10 mph.

    High: 85 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 69. North wind around 7 mph.

    Low: 69 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 64. Northwest wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 82. Light and variable wind becoming south 5 to 8 mph in the morning.
Saturday Night
A chance of showers, with thunderstorms also possible after 11pm. Increasing clouds, with a low around 72. South wind around 6 mph. Chance of precipitation is 50%.
Sunday
A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 85. Southwest wind 6 to 10 mph.
Sunday Night
Partly cloudy, with a low around 69. North wind around 7 mph.
Monday
Sunny, with a high near 82.
Monday Night
Mostly clear, with a low around 65.
Tuesday
Sunny, with a high near 80.
Tuesday Night
Mostly clear, with a low around 68.
Wednesday
Mostly sunny, with a high near 83.
Wednesday Night
Partly cloudy, with a low around 71.
Thursday
Partly sunny, with a high near 85.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 74.
Friday
Partly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Patchogue NY
 40.77°N 73°W (Elev. 43 ft)
Last Update:
1:40 pm EDT Jul 18, 2025
Forecast Valid:
3pm EDT Jul 18, 2025-6pm EDT Jul 25, 2025
 
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