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

21°F

-6°C

Humidity 43%
Wind Speed NW 15 mph
Barometer 30.03 in (1017.0 mb)
Dewpoint 2°F (-17°C)
Visibility 10.00 mi
Wind Chill7°F (-14°C)
Last update 29 Jan 1:56 pm EST
Extended Forecast for

Patchogue NY

Cold Weather Advisory January 30, 12:00am until January 30, 10:00am
Click here for hazard details and duration
Cold Weather Advisory

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 21. Wind chill values between 10 and 15. West wind around 10 mph.

    High: 21 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 6. Wind chill values between -5 and 5. Northwest wind around 9 mph, with gusts as high as 21 mph.

    Low: 6 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny and cold, with a high near 17. Wind chill values between -10 and zero. West wind 9 to 13 mph.

    High: 17 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around 6. Wind chill values between -5 and zero. Northwest wind 5 to 8 mph.

    Low: 6 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny and cold, with a high near 20. North wind 5 to 8 mph.

    High: 20 °F

    Cold

  • Saturday Night

    Saturday Night: A 40 percent chance of snow after 1am. Mostly cloudy, with a low around 12.

    Low: 12 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: A 50 percent chance of snow. Cloudy, with a high near 25. Blustery.

    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

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 21. Wind chill values between 10 and 15. West wind around 10 mph.
Tonight
Mostly clear, with a low around 6. Wind chill values between -5 and 5. Northwest wind around 9 mph, with gusts as high as 21 mph.
Friday
Mostly sunny and cold, with a high near 17. Wind chill values between -10 and zero. West wind 9 to 13 mph.
Friday Night
Partly cloudy, with a low around 6. Wind chill values between -5 and zero. Northwest wind 5 to 8 mph.
Saturday
Partly sunny and cold, with a high near 20. North wind 5 to 8 mph.
Saturday Night
A 40 percent chance of snow after 1am. Mostly cloudy, with a low around 12.
Sunday
A 50 percent chance of snow. Cloudy, with a high near 25. Blustery.
Sunday Night
Mostly cloudy, with a low around 16.
Monday
Mostly sunny, with a high near 31.
Monday Night
Mostly clear, with a low around 17.
Tuesday
Mostly sunny, with a high near 33.
Tuesday Night
Partly cloudy, with a low around 18.
Wednesday
Mostly sunny, with a high near 30.
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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:
1:13 pm EST Jan 29, 2026
Forecast Valid:
2pm EST Jan 29, 2026-6pm EST Feb 4, 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