Marine and Coastal Impacts from Imelda; Unsettled Weather in the West

Swells and high surf from both Imelda and Humberto are expected to bring dangerous marine conditions and rip currents to much of the East Coast over the next several days. A series of Pacific frontal systems will bring waves of showers and thunderstorms to portions of northern California and the Pacific Northwest through midweek. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

63°F

17°C

Humidity 87%
Wind Speed NW 5 mph
Barometer 30.09 in (1019.0 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 30 Sep 5:56 am EDT
Extended Forecast for

Islip, Long Island Mac Arthur Airport NY

  • Today

    Today: Mostly cloudy, with a high near 80. Calm wind becoming northeast 5 to 9 mph in the morning.

    High: 80 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 54. Northeast wind 9 to 14 mph, with gusts as high as 25 mph.

    Low: 54 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 67. North wind 14 to 16 mph, with gusts as high as 26 mph.

    High: 67 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 51. Northeast wind around 11 mph, with gusts as high as 21 mph.

    Low: 51 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 65. Northeast wind 9 to 13 mph.

    High: 65 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 70.

    High: 70 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 80. Calm wind becoming northeast 5 to 9 mph in the morning.
Tonight
Partly cloudy, with a low around 54. Northeast wind 9 to 14 mph, with gusts as high as 25 mph.
Wednesday
Sunny, with a high near 67. North wind 14 to 16 mph, with gusts as high as 26 mph.
Wednesday Night
Mostly clear, with a low around 51. Northeast wind around 11 mph, with gusts as high as 21 mph.
Thursday
Sunny, with a high near 65. Northeast wind 9 to 13 mph.
Thursday Night
Partly cloudy, with a low around 51.
Friday
Mostly sunny, with a high near 70.
Friday Night
Mostly clear, with a low around 56.
Saturday
Sunny, with a high near 75.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Sunny, with a high near 78.
Sunday Night
Mostly clear, with a low around 60.
Monday
Sunny, with a high near 77.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Islip, Long Island Mac Arthur Airport NY
 40.8°N 73.09°W (Elev. 98 ft)
2:04 am EDT Sep 30, 2025
6am EDT Sep 30, 2025-6pm EDT Oct 6, 2025
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database