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

45°F

7°C

Humidity 46%
Wind Speed N 17 mph
Barometer 29.83 in (1010.3 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 25 Dec 3:56 pm EST
Extended Forecast for

Patchogue NY

Winter Storm Warning December 26, 04:00pm until December 27, 01:00pm
Click here for hazard details and duration
Winter Storm Warning

  • Tonight

    Tonight: Partly cloudy, with a low around 19. Wind chill values between 10 and 15. North wind 9 to 14 mph, with gusts as high as 31 mph.

    Low: 19 °F

    Partly Cloudy

  • Friday

    Friday: A 40 percent chance of snow after 4pm. Increasing clouds, with a high near 33. Wind chill values between 10 and 20. North wind 6 to 9 mph.

    High: 33 °F

    Mostly Sunny
    then Chance
    Snow

  • Friday Night

    Friday Night: Snow, mainly after 7pm. The snow could be heavy at times. Low around 25. Wind chill values between 20 and 25. Light east wind increasing to 5 to 9 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.

    Low: 25 °F

    Heavy Snow

  • Saturday

    Saturday: Snow likely before 4pm, then a slight chance of rain. Mostly cloudy, with a high near 34. Wind chill values between 20 and 25. North wind 9 to 13 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 34 °F

    Snow Likely
    then
    Rain/Snow
    Likely

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 21. North wind 3 to 6 mph.

    Low: 21 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 40.

    High: 40 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain. Low around 29. Chance of precipitation is 80%.

    Low: 29 °F

    Rain

  • Monday

    Monday: Rain. High near 49. Chance of precipitation is 80%.

    High: 49 °F

    Rain

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 19. Wind chill values between 10 and 15. North wind 9 to 14 mph, with gusts as high as 31 mph.
Friday
A 40 percent chance of snow after 4pm. Increasing clouds, with a high near 33. Wind chill values between 10 and 20. North wind 6 to 9 mph.
Friday Night
Snow, mainly after 7pm. The snow could be heavy at times. Low around 25. Wind chill values between 20 and 25. Light east wind increasing to 5 to 9 mph in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of 4 to 8 inches possible.
Saturday
Snow likely before 4pm, then a slight chance of rain. Mostly cloudy, with a high near 34. Wind chill values between 20 and 25. North wind 9 to 13 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Saturday Night
Mostly cloudy, with a low around 21. North wind 3 to 6 mph.
Sunday
Mostly cloudy, with a high near 40.
Sunday Night
Rain. Low around 29. Chance of precipitation is 80%.
Monday
Rain. High near 49. Chance of precipitation is 80%.
Monday Night
Mostly cloudy, with a low around 24.
Tuesday
Mostly sunny, with a high near 33. Breezy.
Tuesday Night
Mostly cloudy, with a low around 24.
Wednesday
Mostly sunny, with a high near 36.
Wednesday Night
Mostly cloudy, with a low around 24.
New Year's Day
Partly sunny, with a high near 35.
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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:
1:14 pm EST Dec 25, 2025
Forecast Valid:
4pm EST Dec 25, 2025-6pm EST Jan 1, 2026
 
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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