Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

29°F

-2°C

Humidity 54%
Wind Speed W 12 mph
Barometer 29.74 in (1007.2 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 2 Jan 11:56 am EST
Extended Forecast for

Holbrook NY

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 30. Wind chill values between 15 and 20. West wind around 16 mph.

    High: 30 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 19. Wind chill values between 10 and 15. West wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 19 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 31. Wind chill values between 10 and 20. West wind 6 to 9 mph.

    High: 31 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 30 percent chance of snow after 1am.  Cloudy, with a low around 23. Calm wind.

    Low: 23 °F

    Cloudy then
    Chance Snow

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 33. Calm wind becoming northwest 5 to 9 mph in the morning.

    High: 33 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 18.

    Low: 18 °F

    Partly Cloudy

  • Monday

    Monday: Increasing clouds, with a high near 34.

    High: 34 °F

    Increasing
    Clouds

  • Monday Night

    Monday Night: Cloudy, with a low around 25.

    Low: 25 °F

    Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 41.

    High: 41 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Partly sunny, with a high near 30. Wind chill values between 15 and 20. West wind around 16 mph.
Tonight
Partly cloudy, with a low around 19. Wind chill values between 10 and 15. West wind 8 to 10 mph, with gusts as high as 20 mph.
Saturday
Partly sunny, with a high near 31. Wind chill values between 10 and 20. West wind 6 to 9 mph.
Saturday Night
A 30 percent chance of snow after 1am. Cloudy, with a low around 23. Calm wind.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 33. Calm wind becoming northwest 5 to 9 mph in the morning.
Sunday Night
Partly cloudy, with a low around 18.
Monday
Increasing clouds, with a high near 34.
Monday Night
Cloudy, with a low around 25.
Tuesday
Mostly cloudy, with a high near 41.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
Mostly cloudy, with a high near 44.
Wednesday Night
Mostly cloudy, with a low around 31.
Thursday
Mostly sunny, with a high near 44.
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ABOUT THIS FORECAST

 
Point Forecast:
Holbrook NY
 40.8°N 73.09°W (Elev. 98 ft)
9:15 am EST Jan 2, 2026
12pm EST Jan 2, 2026-6pm EST Jan 8, 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