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

55°F

13°C

Humidity 77%
Wind Speed SW 12 mph
Barometer 30.04 in (1017.2 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 31 Mar 7:56 am EDT
Extended Forecast for

Patchogue NY

  • Today

    Today: A 40 percent chance of showers, mainly before 11am. Partly sunny, with a high near 59. Southwest wind 13 to 16 mph.

    High: 59 °F

    Chance
    Showers

  • Tonight

    Tonight: A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 50. Southwest wind around 15 mph.

    Low: 50 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: Rain likely, with thunderstorms also possible after 5pm. Partly sunny, with a high near 62. Southwest wind 11 to 13 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 62 °F

    Chance Rain
    then Rain
    Likely

  • Wednesday Night

    Wednesday Night: Rain and possibly a thunderstorm. Low around 41. East wind 8 to 13 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 41 °F

    Rain

  • Thursday

    Thursday: A 30 percent chance of rain before 2pm. Cloudy, with a high near 46. Northeast wind around 13 mph.

    High: 46 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A chance of rain between 8pm and 2am. Cloudy, with a low around 39. Chance of precipitation is 30%.

    Low: 39 °F

    Chance Rain

  • Friday

    Friday: Mostly cloudy, with a high near 56.

    High: 56 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 48.

    Low: 48 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

Detailed Forecast

Today
A 40 percent chance of showers, mainly before 11am. Partly sunny, with a high near 59. Southwest wind 13 to 16 mph.
Tonight
A 20 percent chance of showers after 2am. Mostly cloudy, with a low around 50. Southwest wind around 15 mph.
Wednesday
Rain likely, with thunderstorms also possible after 5pm. Partly sunny, with a high near 62. Southwest wind 11 to 13 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Rain and possibly a thunderstorm. Low around 41. East wind 8 to 13 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A 30 percent chance of rain before 2pm. Cloudy, with a high near 46. Northeast wind around 13 mph.
Thursday Night
A chance of rain between 8pm and 2am. Cloudy, with a low around 39. Chance of precipitation is 30%.
Friday
Mostly cloudy, with a high near 56.
Friday Night
Mostly cloudy, with a low around 48.
Saturday
Partly sunny, with a high near 61.
Saturday Night
A 30 percent chance of rain after 8pm. Mostly cloudy, with a low around 46.
Sunday
A 40 percent chance of rain. Mostly cloudy, with a high near 59.
Sunday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 42.
Monday
A 30 percent chance of rain. Mostly cloudy, with a high near 51.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Patchogue NY
 40.77°N 73°W (Elev. 43 ft)
Last Update:
2:46 am EDT Mar 31, 2026
Forecast Valid:
8am EDT Mar 31, 2026-6pm EDT Apr 6, 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