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

68°F

20°C

Humidity 59%
Wind Speed SW 7 mph
Barometer 30.04 in (1017.1 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 1 Apr 2:56 pm EDT
Extended Forecast for

Patchogue NY

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm. High near 66. Southwest wind around 8 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 66 °F

    Showers

  • Tonight

    Tonight: Showers and possibly a thunderstorm. Low around 41. Light northeast wind increasing to 5 to 10 mph after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 41 °F

    Showers

  • Thursday

    Thursday: A 40 percent chance of showers, mainly before 11am. Cloudy, with a high near 46. Northeast wind 11 to 14 mph, with gusts as high as 25 mph.

    High: 46 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of showers after 8pm. Cloudy, with a low around 39. East wind 5 to 9 mph, with gusts as high as 20 mph.

    Low: 39 °F

    Slight Chance
    Showers

  • Friday

    Friday: Mostly cloudy, with a high near 56. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 56 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 49.

    Low: 49 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Sunday

    Sunday: Showers, mainly after 2pm. High near 57. Chance of precipitation is 80%.

    High: 57 °F

    Chance
    Showers then
    Showers

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. High near 66. Southwest wind around 8 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm. Low around 41. Light northeast wind increasing to 5 to 10 mph after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A 40 percent chance of showers, mainly before 11am. Cloudy, with a high near 46. Northeast wind 11 to 14 mph, with gusts as high as 25 mph.
Thursday Night
A 20 percent chance of showers after 8pm. Cloudy, with a low around 39. East wind 5 to 9 mph, with gusts as high as 20 mph.
Friday
Mostly cloudy, with a high near 56. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 49.
Saturday
Mostly sunny, with a high near 63.
Saturday Night
Mostly cloudy, with a low around 45.
Sunday
Showers, mainly after 2pm. High near 57. Chance of precipitation is 80%.
Sunday Night
Showers, mainly before 8pm. Low around 39. Chance of precipitation is 80%.
Monday
Mostly sunny, with a high near 52.
Monday Night
Mostly clear, with a low around 37.
Tuesday
Mostly sunny, with a high near 50.
Tuesday Night
Partly cloudy, with a low around 32.
Wednesday
Sunny, with a high near 47.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Patchogue NY
 40.77°N 73.03°W (Elev. 23 ft)
Last Update:
2:31 pm EDT Apr 1, 2026
Forecast Valid:
3pm EDT Apr 1, 2026-6pm EDT Apr 8, 2026
 
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