Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

32°F

0°C

Humidity 73%
Wind Speed N 9 mph
Barometer 30.13 in (1020.2 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 16 Feb 9:56 am EST
Extended Forecast for

Holbrook NY

  • Washington's Birthday

    Washington's Birthday: Mostly sunny, with a high near 38. Northeast wind 8 to 13 mph.

    High: 38 °F

    Mostly Sunny

  • Tonight

    Tonight: A 20 percent chance of snow after 4am.  Mostly cloudy, with a low around 28. Calm wind.

    Low: 28 °F

    Partly Cloudy
    then Slight
    Chance Snow

  • Tuesday

    Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 41. Calm wind becoming southwest 5 to 7 mph in the morning.

    High: 41 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 31. Calm wind.

    Low: 31 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Rain likely, mainly after 1pm.  Cloudy, with a high near 40. Calm wind becoming southeast 5 to 7 mph in the afternoon.  Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 40 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Rain likely before 1am.  Mostly cloudy, with a low around 32. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 32 °F

    Rain Likely

  • Thursday

    Thursday: Mostly cloudy, with a high near 40.

    High: 40 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 30 percent chance of snow after 1am.  Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy
    then Chance
    Snow

  • Friday

    Friday: Rain likely.  Mostly cloudy, with a high near 40. Chance of precipitation is 70%.

    High: 40 °F

    Rain Likely

Detailed Forecast

Washington's Birthday
Mostly sunny, with a high near 38. Northeast wind 8 to 13 mph.
Tonight
A 20 percent chance of snow after 4am. Mostly cloudy, with a low around 28. Calm wind.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 41. Calm wind becoming southwest 5 to 7 mph in the morning.
Tuesday Night
Increasing clouds, with a low around 31. Calm wind.
Wednesday
Rain likely, mainly after 1pm. Cloudy, with a high near 40. Calm wind becoming southeast 5 to 7 mph in the afternoon. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Rain likely before 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Mostly cloudy, with a high near 40.
Thursday Night
A 30 percent chance of snow after 1am. Mostly cloudy, with a low around 29.
Friday
Rain likely. Mostly cloudy, with a high near 40. Chance of precipitation is 70%.
Friday Night
A chance of rain and snow. Cloudy, with a low around 31. Chance of precipitation is 50%.
Saturday
A 30 percent chance of rain. Mostly cloudy, with a high near 40.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 28.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 38. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Holbrook NY
 40.8°N 73.09°W (Elev. 98 ft)
10:04 am EST Feb 16, 2026
11am EST Feb 16, 2026-6pm EST Feb 22, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database