Coastal and Marine Impacts from Imelda and Humberto as Both Track Away from the Southeast U.S.

Swells and high surf from both Imelda and Humberto are expected to bring dangerous marine and rip current conditions to the east coast of Florida and Georgia today, spreading north along much of the east coast of the U.S. this week. Heavy rainfall north and west of Imelda falling across coastal Florida and Georgia into the Carolinas could cause isolated flash and urban flooding through Tuesday. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

72°F

22°C

Humidity 61%
Wind Speed S 5 mph
Barometer 30.18 in (1022.1 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 29 Sep 6:56 pm EDT
Extended Forecast for

Port Jefferson NYSimilar City Names

  • Tonight

    Tonight: Cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 78. North wind 6 to 8 mph.

    High: 78 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 55. Northeast wind 10 to 17 mph.

    Low: 55 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 67. North wind 14 to 17 mph.

    High: 67 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 52. Northeast wind around 14 mph.

    Low: 52 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 70.

    High: 70 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

Detailed Forecast

Tonight
Cloudy, with a low around 64. Calm wind.
Tuesday
Partly sunny, with a high near 78. North wind 6 to 8 mph.
Tuesday Night
Partly cloudy, with a low around 55. Northeast wind 10 to 17 mph.
Wednesday
Sunny, with a high near 67. North wind 14 to 17 mph.
Wednesday Night
Mostly clear, with a low around 52. Northeast wind around 14 mph.
Thursday
Sunny, with a high near 64.
Thursday Night
Mostly clear, with a low around 53.
Friday
Sunny, with a high near 70.
Friday Night
Mostly clear, with a low around 57.
Saturday
Sunny, with a high near 74.
Saturday Night
Clear, with a low around 60.
Sunday
Sunny, with a high near 76.
Sunday Night
Mostly clear, with a low around 61.
Monday
Sunny, with a high near 76.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Port Jefferson NYSimilar City Names
 40.95°N 73.05°W (Elev. 151 ft)
1:36 pm EDT Sep 29, 2025
7pm EDT Sep 29, 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