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

12°C

53°F

Humidity 80%
Wind Speed E 6 km/h
Barometer 1016.7 mb (30.02 in)
Dewpoint 8°C (47°F)
Visibility 16 km
Last update 21 May 4:56 am EDT
Extended Forecast for

Patchogue NY

  • Overnight

    Overnight: A slight chance of sprinkles. Mostly cloudy, with a low around 11. East wind around 11 km/h.

    Low: 11 °C

    Slight Chance
    Sprinkles

  • Wednesday

    Wednesday: A slight chance of showers before 8am, then a chance of rain after noon. Mostly cloudy, with a high near 15. East wind 16 to 23 km/h. Chance of precipitation is 50%.

    High: 15 °C

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: Rain. Steady temperature around 12. East wind 18 to 23 km/h, with gusts as high as 40 km/h. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 cm possible.

    Low: 12 °C

    Rain Likely
    then Rain

  • Thursday

    Thursday: Rain. High near 14. Northeast wind 26 to 29 km/h, with gusts as high as 50 km/h. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 cm possible.

    High: 14 °C

    Rain

  • Thursday Night

    Thursday Night: A 50 percent chance of showers, mainly before 2am. Mostly cloudy, with a low around 8. Northwest wind 10 to 18 km/h, with gusts as high as 34 km/h.

    Low: 8 °C

    Chance
    Showers

  • Friday

    Friday: Cloudy, with a high near 17.

    High: 17 °C

    Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 9.

    Low: 9 °C

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 18.

    High: 18 °C

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 11.

    Low: 11 °C

    Partly Cloudy

Detailed Forecast

Overnight
A slight chance of sprinkles. Mostly cloudy, with a low around 11. East wind around 11 km/h.
Wednesday
A slight chance of showers before 8am, then a chance of rain after noon. Mostly cloudy, with a high near 15. East wind 16 to 23 km/h. Chance of precipitation is 50%.
Wednesday Night
Rain. Steady temperature around 12. East wind 18 to 23 km/h, with gusts as high as 40 km/h. Chance of precipitation is 100%. New precipitation amounts between 1 and 2 cm possible.
Thursday
Rain. High near 14. Northeast wind 26 to 29 km/h, with gusts as high as 50 km/h. Chance of precipitation is 100%. New precipitation amounts between 2 and 3 cm possible.
Thursday Night
A 50 percent chance of showers, mainly before 2am. Mostly cloudy, with a low around 8. Northwest wind 10 to 18 km/h, with gusts as high as 34 km/h.
Friday
Cloudy, with a high near 17.
Friday Night
Mostly cloudy, with a low around 9.
Saturday
Partly sunny, with a high near 18.
Saturday Night
Partly cloudy, with a low around 11.
Sunday
Mostly sunny, with a high near 20.
Sunday Night
Partly cloudy, with a low around 12.
Memorial Day
A 30 percent chance of showers. Partly sunny, with a high near 21.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 13.
Tuesday
A 30 percent chance of showers. Partly sunny, with a high near 19.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Patchogue NY
 40.77°N 73°W (Elev. 43 m)
Last Update:
3:45 am EDT May 21, 2025
Forecast Valid:
5am EDT May 21, 2025-6pm EDT May 27, 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