Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

51°F

11°C

Humidity 69%
Wind Speed NW 20 G 31 mph
Barometer 29.85 in (1010.8 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 5 Apr 8:56 pm EDT
Extended Forecast for

Holbrook NY

  • Tonight

    Tonight: Mostly cloudy early, then gradual clearing, with a low around 39. Northwest wind 6 to 8 mph.

    Low: 39 °F

    Gradual
    Clearing

  • Monday

    Monday: Sunny, with a high near 53. West wind 11 to 13 mph.

    High: 53 °F

    Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers.  Partly cloudy, with a low around 38. Southwest wind 3 to 5 mph.

    Low: 38 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Sunny, with a high near 50. West wind 6 to 13 mph.

    High: 50 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 30. Northwest wind 7 to 9 mph.

    Low: 30 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 34.

    Low: 34 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 40.

    Low: 40 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy early, then gradual clearing, with a low around 39. Northwest wind 6 to 8 mph.
Monday
Sunny, with a high near 53. West wind 11 to 13 mph.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 38. Southwest wind 3 to 5 mph.
Tuesday
Sunny, with a high near 50. West wind 6 to 13 mph.
Tuesday Night
Mostly clear, with a low around 30. Northwest wind 7 to 9 mph.
Wednesday
Sunny, with a high near 46.
Wednesday Night
Mostly clear, with a low around 34.
Thursday
Mostly sunny, with a high near 51.
Thursday Night
Partly cloudy, with a low around 40.
Friday
Mostly sunny, with a high near 59.
Friday Night
Partly cloudy, with a low around 46.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 45.
Sunday
Mostly sunny, with a high near 58.
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ABOUT THIS FORECAST

 
Point Forecast:
Holbrook NY
 40.8°N 73.09°W (Elev. 98 ft)
6:30 pm EDT Apr 5, 2026
9pm EDT Apr 5, 2026-6pm EDT Apr 12, 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