National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

A Few Clouds

12°F

-11°C

Humidity 46%
Wind Speed NW 20 G 25 mph
Barometer 30.15 in (1020.9 mb)
Dewpoint -5°F (-21°C)
Visibility 10.00 mi
Wind Chill-6°F (-21°C)
Last update 30 Jan 10:56 am EST
Extended Forecast for

Patchogue NY

Cold Weather Advisory January 30, 11:16am until January 31, 10:00am
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory January 30, 11:16am until January 31, 10:00am

    NOW until 10:00am Sat

    Cold Weather Advisory

  • Today

    High: 19 °F

    Cold

  • Tonight

    Tonight: Partly cloudy, with a low around 5. Wind chill values between -5 and zero. Northwest wind 5 to 10 mph.

    Low: 5 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 22. Wind chill values between -5 and 5. North wind 6 to 8 mph.

    High: 22 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 11. Wind chill values between -5 and 5. North wind 7 to 16 mph, with gusts as high as 26 mph.

    Low: 11 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: A 30 percent chance of snow. Cloudy, with a high near 25. Blustery, with a north wind 17 to 21 mph, with gusts as high as 32 mph.

    High: 25 °F

    Chance Snow
    and Blustery

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

Detailed Forecast

Today
Mostly sunny and cold, with a high near 19. Wind chill values between zero and 5. West wind 15 to 17 mph.
Tonight
Partly cloudy, with a low around 5. Wind chill values between -5 and zero. Northwest wind 5 to 10 mph.
Saturday
Partly sunny, with a high near 22. Wind chill values between -5 and 5. North wind 6 to 8 mph.
Saturday Night
A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 11. Wind chill values between -5 and 5. North wind 7 to 16 mph, with gusts as high as 26 mph.
Sunday
A 30 percent chance of snow. Cloudy, with a high near 25. Blustery, with a north wind 17 to 21 mph, with gusts as high as 32 mph.
Sunday Night
Mostly cloudy, with a low around 16.
Monday
Mostly sunny, with a high near 31.
Monday Night
Partly cloudy, with a low around 17.
Tuesday
Sunny, with a high near 32.
Tuesday Night
Partly cloudy, with a low around 18.
Wednesday
Mostly sunny, with a high near 31.
Wednesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 19.
Thursday
Partly sunny, with a high near 31.
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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:
1:47 am EST Jan 30, 2026
Forecast Valid:
11am EST Jan 30, 2026-6pm EST Feb 5, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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