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

45°F

7°C

Humidity 83%
Wind Speed SW 7 mph
Barometer 29.39 in (995.3 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 15 Jan 12:56 am EST
Extended Forecast for

Patchogue NY

  • Overnight

    Overnight: A 30 percent chance of showers, mainly before 2am. Cloudy, with a steady temperature around 43. South wind 6 to 8 mph.

    Low: 43 °F

    Chance
    Showers

  • Thursday

    Thursday: Mostly cloudy, with a temperature rising to near 42 by 9am, then falling to around 35 during the remainder of the day. Southwest wind 6 to 15 mph, with gusts as high as 28 mph.

    High: 42 °F⇓

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 21. Wind chill values between 5 and 15. West wind 13 to 15 mph, with gusts as high as 30 mph.

    Low: 21 °F

    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 36. Wind chill values between 5 and 15. West wind 10 to 17 mph, with gusts as high as 31 mph.

    High: 36 °F

    Sunny

  • Friday Night

    Friday Night: A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 30. Southwest wind 6 to 8 mph.

    Low: 30 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: A chance of snow before 10am, then a chance of rain. Mostly cloudy, with a high near 42. Chance of precipitation is 40%.

    High: 42 °F

    Chance
    Rain/Snow
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain and snow before 1pm, then a chance of snow. Mostly cloudy, with a high near 37. Chance of precipitation is 40%.

    High: 37 °F

    Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: A 30 percent chance of snow before 1am. Mostly cloudy, with a low around 21.

    Low: 21 °F

    Chance Snow

Detailed Forecast

Overnight
A 30 percent chance of showers, mainly before 2am. Cloudy, with a steady temperature around 43. South wind 6 to 8 mph.
Thursday
Mostly cloudy, with a temperature rising to near 42 by 9am, then falling to around 35 during the remainder of the day. Southwest wind 6 to 15 mph, with gusts as high as 28 mph.
Thursday Night
Mostly cloudy, with a low around 21. Wind chill values between 5 and 15. West wind 13 to 15 mph, with gusts as high as 30 mph.
Friday
Sunny, with a high near 36. Wind chill values between 5 and 15. West wind 10 to 17 mph, with gusts as high as 31 mph.
Friday Night
A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 30. Southwest wind 6 to 8 mph.
Saturday
A chance of snow before 10am, then a chance of rain. Mostly cloudy, with a high near 42. Chance of precipitation is 40%.
Saturday Night
Mostly cloudy, with a low around 29.
Sunday
A chance of rain and snow before 1pm, then a chance of snow. Mostly cloudy, with a high near 37. Chance of precipitation is 40%.
Sunday Night
A 30 percent chance of snow before 1am. Mostly cloudy, with a low around 21.
M.L.King Day
Mostly sunny, with a high near 32.
Monday Night
Partly cloudy, with a low around 16.
Tuesday
Mostly sunny, with a high near 25.
Tuesday Night
Partly cloudy, with a low around 13.
Wednesday
Mostly sunny, with a high near 29.
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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:
1:15 am EST Jan 15, 2026
Forecast Valid:
1am EST Jan 15, 2026-6pm EST Jan 21, 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