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.

Light Snow Blowing Snow and Breezy

32°F

0°C

Humidity 75%
Wind Speed NW 23 mph
Barometer 29.48 in (998.4 mb)
Dewpoint 25°F (-4°C)
Visibility 4.00 mi
Wind Chill19°F (-7°C)
Last update 23 Feb 2:56 pm EST
Extended Forecast for

Holbrook NY

Coastal Flood Advisory until February 23, 06:00pm
Blizzard Warning February 23, 03:44pm until February 23, 06:00pm
Click here for hazard details and duration
Coastal Flood Advisory
Blizzard Warning
  •  
    Coastal Flood Advisory until February 23, 06:00pm
    Blizzard Warning February 23, 03:44pm until February 23, 06:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 33 °F

    Areas Blowing
    Snow and
    Breezy

  • Tonight

    Tonight: Patchy blowing snow. Cloudy, then gradually becoming partly cloudy, with a low around 20. Wind chill values between 10 and 15. Blustery, with a northwest wind 10 to 20 mph, with gusts as high as 33 mph.

    Low: 20 °F

    Patchy
    Blowing Snow
    and Blustery

  • Tuesday

    Tuesday: Mostly sunny, with a high near 30. Wind chill values between 10 and 20. Northwest wind 9 to 11 mph, with gusts as high as 22 mph.

    High: 30 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of snow showers between 1am and 4am, then a chance of snow after 4am. Mostly cloudy, with a temperature falling to near 19 by 10pm, then rising to around 29 during the remainder of the night. Calm wind becoming south 5 to 7 mph after midnight. Chance of precipitation is 50%.

    Low: 19 °F⇑

    Partly Cloudy
    then Chance
    Snow Showers

  • Wednesday

    Wednesday: Snow likely, mixing with rain after 10am, then gradually ending. Cloudy, then gradually becoming mostly sunny, with a high near 40. South wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of rain and snow after 1pm. Partly sunny, with a high near 37. Chance of precipitation is 50%.

    High: 37 °F

    Partly Sunny
    then Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Snow likely, mainly before 1am. Mostly cloudy, with a low around 27. Chance of precipitation is 70%.

    Low: 27 °F

    Snow Likely

Detailed Forecast

This Afternoon
Areas of blowing snow. Cloudy, with a high near 33. Wind chill values between 20 and 25. Breezy, with a northwest wind around 25 mph, with gusts as high as 40 mph.
Tonight
Patchy blowing snow. Cloudy, then gradually becoming partly cloudy, with a low around 20. Wind chill values between 10 and 15. Blustery, with a northwest wind 10 to 20 mph, with gusts as high as 33 mph.
Tuesday
Mostly sunny, with a high near 30. Wind chill values between 10 and 20. Northwest wind 9 to 11 mph, with gusts as high as 22 mph.
Tuesday Night
A chance of snow showers between 1am and 4am, then a chance of snow after 4am. Mostly cloudy, with a temperature falling to near 19 by 10pm, then rising to around 29 during the remainder of the night. Calm wind becoming south 5 to 7 mph after midnight. Chance of precipitation is 50%.
Wednesday
Snow likely, mixing with rain after 10am, then gradually ending. Cloudy, then gradually becoming mostly sunny, with a high near 40. South wind 10 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Wednesday Night
Partly cloudy, with a low around 28.
Thursday
A chance of rain and snow after 1pm. Partly sunny, with a high near 37. Chance of precipitation is 50%.
Thursday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 27. Chance of precipitation is 70%.
Friday
Mostly sunny, with a high near 38.
Friday Night
Mostly clear, with a low around 26.
Saturday
Mostly sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 28.
Sunday
Partly sunny, with a high near 40.
Sunday Night
Mostly cloudy, with a low around 20.
Monday
A chance of snow. Mostly cloudy, with a high near 33.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Holbrook NY
 40.8°N 73.06°W (Elev. 66 ft)
Last Update:
12:58 pm EST Feb 23, 2026
Forecast Valid:
3pm EST Feb 23, 2026-6pm EST Mar 2, 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