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

46°F

8°C

Humidity 83%
Wind Speed SE 3 mph
Barometer 29.97 in (1014.9 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 11 Mar 5:56 am EDT
Extended Forecast for

Patchogue NY

  • Today

    Today: A 30 percent chance of showers after 2pm. Partly sunny, with a high near 63. South wind 5 to 11 mph.

    High: 63 °F

    Partly Sunny
    then Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 2am. Areas of fog. Otherwise, mostly cloudy, with a low around 41. South wind around 11 mph, with gusts as high as 26 mph.

    Low: 41 °F

    Chance
    Showers and
    Areas Fog

  • Thursday

    Thursday: Rain showers likely before 2pm, then a chance of rain and snow showers. Cloudy, with a temperature rising to near 52 by 10am, then falling to around 41 during the remainder of the day. Northwest wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 52 °F⇓

    Showers
    Likely then
    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 29. Northwest wind around 7 mph.

    Low: 29 °F

    Decreasing
    Clouds

  • Friday

    Friday: Increasing clouds, with a high near 46. West wind 5 to 15 mph becoming south in the afternoon.

    High: 46 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 35.

    Low: 35 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Sunny, with a high near 47.

    High: 47 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

  • Sunday

    Sunday: Cloudy, with a high near 48.

    High: 48 °F

    Cloudy

Detailed Forecast

Today
A 30 percent chance of showers after 2pm. Partly sunny, with a high near 63. South wind 5 to 11 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 2am. Areas of fog. Otherwise, mostly cloudy, with a low around 41. South wind around 11 mph, with gusts as high as 26 mph.
Thursday
Rain showers likely before 2pm, then a chance of rain and snow showers. Cloudy, with a temperature rising to near 52 by 10am, then falling to around 41 during the remainder of the day. Northwest wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Thursday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 29. Northwest wind around 7 mph.
Friday
Increasing clouds, with a high near 46. West wind 5 to 15 mph becoming south in the afternoon.
Friday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 35.
Saturday
Sunny, with a high near 47.
Saturday Night
Mostly cloudy, with a low around 31.
Sunday
Cloudy, with a high near 48.
Sunday Night
Showers likely, mainly after 2am. Cloudy, with a low around 39. Chance of precipitation is 70%.
Monday
Showers. High near 54. Chance of precipitation is 90%.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 28.
Tuesday
Mostly sunny, with a high near 39.
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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:
5:42 am EDT Mar 11, 2026
Forecast Valid:
6am EDT Mar 11, 2026-6pm EDT Mar 17, 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