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.

Fog/Mist

56°F

13°C

Humidity 93%
Wind Speed SW 9 mph
Barometer 29.86 in (1011.1 mb)
Dewpoint 54°F (12°C)
Visibility 1.00 mi
Last update 26 Nov 5:56 am EST
Extended Forecast for

Holbrook NY

  • Today

    Today: Showers likely, mainly before 10am. Patchy fog before 1pm, then patchy fog after 4pm. Otherwise, cloudy, with a high near 60. Southwest wind 6 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    High: 60 °F

    Showers
    Likely and
    Patchy Fog

  • Tonight

    Tonight: A 30 percent chance of showers before 10pm. Patchy fog before 10pm. Otherwise, cloudy during the early evening, then gradual clearing, with a low around 35. West wind 6 to 16 mph, with gusts as high as 31 mph.

    Low: 35 °F

    Chance
    Showers and
    Patchy Fog
    then Partly
    Cloudy

  • Thanksgiving Day

    Thanksgiving Day: Mostly sunny, with a high near 45. West wind 15 to 18 mph, with gusts as high as 32 mph.

    High: 45 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29. Wind chill values between 20 and 25. West wind 16 to 18 mph, with gusts as high as 33 mph.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 42. Breezy, with a west wind 18 to 23 mph, with gusts as high as 44 mph.

    High: 42 °F

    Mostly Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 42.

    High: 42 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 52.

    High: 52 °F

    Mostly Cloudy

Detailed Forecast

Today
Showers likely, mainly before 10am. Patchy fog before 1pm, then patchy fog after 4pm. Otherwise, cloudy, with a high near 60. Southwest wind 6 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
A 30 percent chance of showers before 10pm. Patchy fog before 10pm. Otherwise, cloudy during the early evening, then gradual clearing, with a low around 35. West wind 6 to 16 mph, with gusts as high as 31 mph.
Thanksgiving Day
Mostly sunny, with a high near 45. West wind 15 to 18 mph, with gusts as high as 32 mph.
Thursday Night
Mostly clear, with a low around 29. Wind chill values between 20 and 25. West wind 16 to 18 mph, with gusts as high as 33 mph.
Friday
Mostly sunny, with a high near 42. Breezy, with a west wind 18 to 23 mph, with gusts as high as 44 mph.
Friday Night
Mostly clear, with a low around 30.
Saturday
Sunny, with a high near 42.
Saturday Night
Mostly cloudy, with a low around 31.
Sunday
Mostly cloudy, with a high near 52.
Sunday Night
A 50 percent chance of rain. Cloudy, with a low around 40.
Monday
A 40 percent chance of rain. Cloudy, with a high near 51.
Monday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 32.
Tuesday
Rain likely. Mostly cloudy, with a high near 44. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Holbrook NY
 40.8°N 73.09°W (Elev. 98 ft)
Last Update:
1:00 am EST Nov 26, 2025
Forecast Valid:
6am EST Nov 26, 2025-6pm EST Dec 2, 2025
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation