National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

A Few Clouds

51°F

11°C

Humidity 64%
Wind Speed W 7 mph
Barometer 29.98 in (1015.1 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Wind Chill48°F (9°C)
Last update 11 Nov 7:56 am EST
Extended Forecast for

Holbrook NY

  • Veterans Day

    Veterans Day: Mostly sunny, with a high near 61. Southwest wind 3 to 6 mph.

    High: 61 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 47. Calm wind becoming east around 6 mph after midnight.

    Low: 47 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of rain and thunderstorms before 1pm, then rain and possibly a thunderstorm between 1pm and 4pm, then rain likely after 4pm. High near 60. East wind 9 to 13 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 60 °F

    Chance Rain
    then Rain

  • Thursday Night

    Thursday Night: Rain. Low around 42. North wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 42 °F

    Rain

  • Friday

    Friday: Rain. High near 50. North wind 13 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 50 °F

    Rain

  • Friday Night

    Friday Night: A 40 percent chance of rain. Mostly cloudy, with a low around 35.

    Low: 35 °F

    Chance Rain

  • Saturday

    Saturday: Mostly cloudy, with a high near 48.

    High: 48 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

Detailed Forecast

Veterans Day
Mostly sunny, with a high near 61. Southwest wind 3 to 6 mph.
Tonight
Mostly cloudy, with a low around 47. Calm wind becoming east around 6 mph after midnight.
Thursday
A chance of rain and thunderstorms before 1pm, then rain and possibly a thunderstorm between 1pm and 4pm, then rain likely after 4pm. High near 60. East wind 9 to 13 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Rain. Low around 42. North wind 8 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain. High near 50. North wind 13 to 15 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 35.
Saturday
Mostly cloudy, with a high near 48.
Saturday Night
Partly cloudy, with a low around 35.
Sunday
Mostly sunny, with a high near 51.
Sunday Night
Partly cloudy, with a low around 35.
Monday
Sunny, with a high near 51.
Monday Night
Mostly clear, with a low around 34.
Tuesday
Sunny, with a high near 51.
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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:
1:20 am EST Nov 11, 2026
Forecast Valid:
8am EST Nov 11, 2026-6pm EST Nov 17, 2026
 
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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