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.

Overcast

58°F

14°C

Humidity 70%
Wind Speed E 16 G 26 mph
Barometer 29.54 in (1000.4 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 12 Nov 11:56 am EST
Extended Forecast for

Holbrook NY

  • This Afternoon

    This Afternoon: Rain, mainly after 1pm. Temperature falling to around 53 by 5pm. East wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 60 °F⇓

    Rain

  • Tonight

    Tonight: Rain. Low around 39. Northeast wind 15 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Rain

  • Friday

    Friday: Rain. High near 47. North wind 13 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 47 °F

    Rain

  • Friday Night

    Friday Night: A 30 percent chance of rain, mainly before 1am. Mostly cloudy, with a low around 34. North wind around 8 mph.

    Low: 34 °F

    Chance Rain

  • Saturday

    Saturday: Partly sunny, with a high near 48. Northwest wind 8 to 11 mph.

    High: 48 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Sunday Night

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

    Low: 35 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 51.

    High: 51 °F

    Sunny

Detailed Forecast

This Afternoon
Rain, mainly after 1pm. Temperature falling to around 53 by 5pm. East wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Rain. Low around 39. Northeast wind 15 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain. High near 47. North wind 13 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
A 30 percent chance of rain, mainly before 1am. Mostly cloudy, with a low around 34. North wind around 8 mph.
Saturday
Partly sunny, with a high near 48. Northwest wind 8 to 11 mph.
Saturday Night
Partly cloudy, with a low around 34.
Sunday
Mostly sunny, with a high near 50.
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 52.
Tuesday Night
Mostly clear, with a low around 34.
Wednesday
Sunny, with a high near 56.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Holbrook NY
 40.8°N 73.06°W (Elev. 66 ft)
Last Update:
10:28 am EST Nov 12, 2026
Forecast Valid:
12pm EST Nov 12, 2026-6pm EST Nov 18, 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