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.

Mostly Cloudy

61°F

16°C

Humidity 63%
Wind Speed S 18 G 31 mph
Barometer 30.00 in (1015.8 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 13 May 10:56 am EDT
Extended Forecast for

Holbrook NY

  • Today

    Today: Partly sunny, with a high near 68. Breezy, with a south wind 16 to 20 mph, with gusts as high as 36 mph.

    High: 68 °F

    Partly Sunny
    and Breezy

  • Tonight

    Tonight: Showers likely, mainly after 5am. Mostly cloudy, with a low around 54. South wind 7 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

    Low: 54 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: Showers, with thunderstorms also possible after 2pm. High near 66. Southeast wind 5 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 66 °F

    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 52. Light northwest wind.

    Low: 52 °F

    Chance
    Showers

  • Friday

    Friday: A 40 percent chance of showers, mainly before 2pm. Partly sunny, with a high near 70. North wind 6 to 8 mph.

    High: 70 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 68. Breezy, with a south wind 16 to 20 mph, with gusts as high as 36 mph.
Tonight
Showers likely, mainly after 5am. Mostly cloudy, with a low around 54. South wind 7 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.
Thursday
Showers, with thunderstorms also possible after 2pm. High near 66. Southeast wind 5 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 52. Light northwest wind.
Friday
A 40 percent chance of showers, mainly before 2pm. Partly sunny, with a high near 70. North wind 6 to 8 mph.
Friday Night
Partly cloudy, with a low around 54.
Saturday
Sunny, with a high near 76.
Saturday Night
Partly cloudy, with a low around 59.
Sunday
Sunny, with a high near 82.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Mostly sunny, with a high near 78.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Holbrook NY
 40.8°N 73.09°W (Elev. 98 ft)
Last Update:
2:29 am EDT May 13, 2026
Forecast Valid:
11am EDT May 13, 2026-6pm EDT May 19, 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