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.

Fog/Mist and Windy

29°F

-2°C

Humidity 92%
Wind Speed N 28 G 53 mph
Barometer 29.34 in (993.6 mb)
Dewpoint 27°F (-3°C)
Visibility 2.50 mi
Wind Chill14°F (-10°C)
Last update 23 Feb 4:56 am EST
Extended Forecast for

Patchogue NY

Coastal Flood Advisory February 23, 11:00am until February 23, 06:00pm
Blizzard Warning February 23, 05:12am until February 23, 06:00pm
Click here for hazard details and duration
Coastal Flood Advisory
Blizzard Warning
  •  
    Blizzard Warning February 23, 05:12am until February 23, 06:00pm

    NOW until 6:00pm Mon

    Blizzard Warning

  • Overnight

    Low: 29 °F

    Heavy Snow
    and Areas
    Blowing Snow

  • Monday

    Monday: Snow, mainly before 4pm. The snow could be heavy at times. Areas of blowing snow. High near 33. Wind chill values between 10 and 20. Windy, with a north wind 31 to 36 mph decreasing to 24 to 29 mph in the afternoon. Winds could gust as high as 55 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.

    High: 33 °F

    Heavy Snow
    and Areas
    Blowing Snow

  • Monday Night

    Monday Night: A 30 percent chance of snow before 7pm. Mostly cloudy, with a low around 20. Wind chill values between 10 and 15. Blustery, with a northwest wind 14 to 21 mph, with gusts as high as 32 mph.

    Low: 20 °F

    Chance Snow
    and Blustery
    then Mostly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 30. Wind chill values between 10 and 20. Northwest wind 8 to 11 mph.

    High: 30 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 50 percent chance of snow, mainly after 4am. Mostly cloudy, with a temperature falling to near 20 by 10pm, then rising to around 29 during the remainder of the night. West wind around 6 mph becoming calm.

    Low: 20 °F⇑

    Partly Cloudy
    then Chance
    Snow

  • Wednesday

    Wednesday: Rain likely, possibly mixed with snow, becoming all rain after 7am, then gradually ending. Cloudy, then gradually becoming mostly sunny, with a high near 40. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Rain/Snow
    Likely then
    Rain Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of rain and snow after 1pm. Partly sunny, with a high near 41. Chance of precipitation is 50%.

    High: 41 °F

    Partly Sunny
    then Chance
    Rain/Snow

Detailed Forecast

Overnight
Snow. The snow could be heavy at times. Areas of blowing snow. Low around 29. Wind chill values between 10 and 15. Windy, with a north wind around 37 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. Total nighttime snow accumulation of 13 to 19 inches possible.
Monday
Snow, mainly before 4pm. The snow could be heavy at times. Areas of blowing snow. High near 33. Wind chill values between 10 and 20. Windy, with a north wind 31 to 36 mph decreasing to 24 to 29 mph in the afternoon. Winds could gust as high as 55 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 7 inches possible.
Monday Night
A 30 percent chance of snow before 7pm. Mostly cloudy, with a low around 20. Wind chill values between 10 and 15. Blustery, with a northwest wind 14 to 21 mph, with gusts as high as 32 mph.
Tuesday
Mostly sunny, with a high near 30. Wind chill values between 10 and 20. Northwest wind 8 to 11 mph.
Tuesday Night
A 50 percent chance of snow, mainly after 4am. Mostly cloudy, with a temperature falling to near 20 by 10pm, then rising to around 29 during the remainder of the night. West wind around 6 mph becoming calm.
Wednesday
Rain likely, possibly mixed with snow, becoming all rain after 7am, then gradually ending. Cloudy, then gradually becoming mostly sunny, with a high near 40. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday Night
Partly cloudy, with a low around 27.
Thursday
A chance of rain and snow after 1pm. Partly sunny, with a high near 41. Chance of precipitation is 50%.
Thursday Night
Rain likely. Mostly cloudy, with a low around 30. Chance of precipitation is 70%.
Friday
Partly sunny, with a high near 41.
Friday Night
Mostly clear, with a low around 28.
Saturday
Mostly sunny, with a high near 43.
Saturday Night
Partly cloudy, with a low around 30.
Sunday
Partly sunny, with a high near 42.
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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:
1:42 am EST Feb 23, 2026
Forecast Valid:
5am EST Feb 23, 2026-6pm EST Mar 1, 2026
 
Forecast Discussion
 
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Additional Resources

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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