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.

Partly Cloudy

52°F

11°C

Humidity 83%
Wind Speed W 6 mph
Barometer 30.32 in (1026.5 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 2 Nov 11:56 pm EST
Extended Forecast for

Holbrook NYSimilar City Names

  • Overnight

    Overnight: Partly cloudy, with a low around 48. Southwest wind 3 to 5 mph.

    Low: 48 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 67. Light southwest wind increasing to 5 to 10 mph in the morning.

    High: 67 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 52. Light southwest wind.

    Low: 52 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 69. Light southwest wind increasing to 5 to 10 mph in the morning.

    High: 69 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 57. South wind 3 to 5 mph.

    Low: 57 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A 40 percent chance of showers after 1pm. Mostly cloudy, with a high near 70.

    High: 70 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 57. Chance of precipitation is 70%.

    Low: 57 °F

    Rain Likely

  • Friday

    Friday: Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 68. Chance of precipitation is 60%.

    High: 68 °F

    Rain Likely

  • Friday Night

    Friday Night: Rain likely, mainly before 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.

    Low: 53 °F

    Rain Likely

Detailed Forecast

Overnight
Partly cloudy, with a low around 48. Southwest wind 3 to 5 mph.
Tuesday
Mostly sunny, with a high near 67. Light southwest wind increasing to 5 to 10 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 52. Light southwest wind.
Wednesday
Sunny, with a high near 69. Light southwest wind increasing to 5 to 10 mph in the morning.
Wednesday Night
Increasing clouds, with a low around 57. South wind 3 to 5 mph.
Thursday
A 40 percent chance of showers after 1pm. Mostly cloudy, with a high near 70.
Thursday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 57. Chance of precipitation is 70%.
Friday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 68. Chance of precipitation is 60%.
Friday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 60%.
Saturday
A 40 percent chance of rain before 1pm. Partly sunny, with a high near 66.
Saturday Night
Partly cloudy, with a low around 46.
Sunday
Mostly sunny, with a high near 60.
Sunday Night
Partly cloudy, with a low around 43.
Monday
A 30 percent chance of rain. Partly sunny, with a high near 59.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Holbrook NYSimilar City Names
 40.8°N 73.06°W (Elev. 66 ft)
Last Update:
3:41 pm EST Nov 2, 2026
Forecast Valid:
12am EST Nov 3, 2026-6pm EST Nov 9, 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