National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

73°F

23°C

Humidity 79%
Wind Speed SW 5 mph
Barometer 30.00 in (1016.0 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 27 Jun 5:56 pm EDT
Extended Forecast for

Holbrook NY

  • Tonight

    Tonight: A 50 percent chance of showers. Mostly cloudy, with a low around 65. South wind 5 to 8 mph becoming calm in the evening.

    Low: 65 °F

    Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 82. Northeast wind 5 to 7 mph.

    High: 82 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 64. Light and variable wind.

    Low: 64 °F

    Increasing
    Clouds

  • Monday

    Monday: Cloudy, then gradually becoming mostly sunny, with a high near 84. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 84 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 67. Southwest wind 3 to 5 mph.

    Low: 67 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 76.

    Low: 76 °F

    Mostly Clear

Detailed Forecast

Tonight
A 50 percent chance of showers. Mostly cloudy, with a low around 65. South wind 5 to 8 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 82. Northeast wind 5 to 7 mph.
Sunday Night
Increasing clouds, with a low around 64. Light and variable wind.
Monday
Cloudy, then gradually becoming mostly sunny, with a high near 84. Calm wind becoming south 5 to 8 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 67. Southwest wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 84.
Tuesday Night
Partly cloudy, with a low around 70.
Wednesday
Mostly sunny, with a high near 92.
Wednesday Night
Mostly clear, with a low around 76.
Thursday
Sunny, with a high near 98.
Thursday Night
Mostly clear, with a low around 77.
Friday
Mostly sunny, with a high near 98.
Friday Night
Partly cloudy, with a low around 74.
Independence Day
A 40 percent chance of showers. Mostly sunny, with a high near 91.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Holbrook NY
 40.78°N 73.06°W (Elev. 49 ft)
Last Update:
2:33 pm EDT Jun 27, 2026
Forecast Valid:
6pm EDT Jun 27, 2026-6pm EDT Jul 4, 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