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.

Mostly Cloudy

65°F

18°C

Humidity 87%
Wind Speed SW 12 mph
Barometer 30.01 in (1016.3 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 31 Oct 8:56 pm EDT
Extended Forecast for

Holtsville NY

Red Flag Warning November 1, 08:00am until November 1, 07:00pm
Click here for hazard details and duration
Red Flag Warning

  • Tonight

    Tonight: Partly cloudy, with a low around 61. Southwest wind 9 to 11 mph, with gusts as high as 22 mph.

    Low: 61 °F

    Partly Cloudy

  • Friday

    Friday: A 30 percent chance of showers, mainly before 11am. Mostly cloudy, then gradually becoming sunny, with a high near 78. Southwest wind 13 to 15 mph, with gusts as high as 28 mph.

    High: 78 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 46. Northwest wind 8 to 10 mph, with gusts as high as 21 mph.

    Low: 46 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 60. North wind 8 to 10 mph.

    High: 60 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 37. North wind around 7 mph.

    Low: 37 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

  • Monday

    Monday: A 30 percent chance of showers after 2pm. Mostly cloudy, with a high near 61.

    High: 61 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers before 2am. Cloudy, with a low around 51.

    Low: 51 °F

    Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 61. Southwest wind 9 to 11 mph, with gusts as high as 22 mph.
Friday
A 30 percent chance of showers, mainly before 11am. Mostly cloudy, then gradually becoming sunny, with a high near 78. Southwest wind 13 to 15 mph, with gusts as high as 28 mph.
Friday Night
Mostly clear, with a low around 46. Northwest wind 8 to 10 mph, with gusts as high as 21 mph.
Saturday
Sunny, with a high near 60. North wind 8 to 10 mph.
Saturday Night
Mostly clear, with a low around 37. North wind around 7 mph.
Sunday
Sunny, with a high near 57.
Sunday Night
Mostly cloudy, with a low around 43.
Monday
A 30 percent chance of showers after 2pm. Mostly cloudy, with a high near 61.
Monday Night
A 30 percent chance of showers before 2am. Cloudy, with a low around 51.
Tuesday
Mostly cloudy, with a high near 69.
Tuesday Night
Mostly cloudy, with a low around 58.
Wednesday
A 30 percent chance of showers. Partly sunny, with a high near 72.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 50.
Thursday
Mostly sunny, with a high near 64.
Click Map For Forecast
Disclaimer
Map Legend

ABOUT THIS FORECAST

 
Point Forecast:
Holtsville NY
 40.82°N 73.05°W (Elev. 112 ft)
Last Update:
7:52 pm EDT Oct 31, 2024
Forecast Valid:
9pm EDT Oct 31, 2024-6pm EST Nov 7, 2024
 
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