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.

Overcast

70°F

21°C

Humidity 84%
Wind Speed N 6 mph
Barometer 29.98 in (1015.2 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 2 Oct 9:56 pm EDT
Extended Forecast for

Patchogue NYSimilar City Names

  • Tonight

    Tonight: A 40 percent chance of showers before 2am. Mostly cloudy, with a low around 59. North wind around 7 mph, with gusts as high as 20 mph.

    Low: 59 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 71. North wind around 10 mph.

    High: 71 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54. East wind around 6 mph.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: A 40 percent chance of showers after 2pm. Increasing clouds, with a high near 64. East wind around 11 mph.

    High: 64 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A 50 percent chance of showers before 2am. Cloudy, with a low around 56. East wind 5 to 7 mph becoming calm in the evening.

    Low: 56 °F

    Chance
    Showers

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 69.

    High: 69 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Clear, with a low around 49.

    Low: 49 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 60.

    High: 60 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 48.

    Low: 48 °F

    Clear

Detailed Forecast

Tonight
A 40 percent chance of showers before 2am. Mostly cloudy, with a low around 59. North wind around 7 mph, with gusts as high as 20 mph.
Saturday
Mostly sunny, with a high near 71. North wind around 10 mph.
Saturday Night
Mostly clear, with a low around 54. East wind around 6 mph.
Sunday
A 40 percent chance of showers after 2pm. Increasing clouds, with a high near 64. East wind around 11 mph.
Sunday Night
A 50 percent chance of showers before 2am. Cloudy, with a low around 56. East wind 5 to 7 mph becoming calm in the evening.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 69.
Monday Night
Clear, with a low around 49.
Tuesday
Sunny, with a high near 60.
Tuesday Night
Clear, with a low around 48.
Wednesday
Sunny, with a high near 61.
Wednesday Night
Mostly clear, with a low around 53.
Thursday
Sunny, with a high near 65.
Thursday Night
Mostly clear, with a low around 55.
Friday
Mostly sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Patchogue NYSimilar City Names
 40.77°N 73°W (Elev. 43 ft)
Last Update:
2:54 pm EDT Oct 2, 2026
Forecast Valid:
10pm EDT Oct 2, 2026-6pm EDT Oct 9, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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