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.

Mostly Cloudy

76°F

24°C

Humidity 52%
Wind Speed N 6 mph
Barometer 30.18 in (1022.0 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 29 Sep 4:56 pm EDT
Extended Forecast for

Great River NY

  • Tonight

    Tonight: Mostly cloudy, with a low around 62. Southeast wind around 5 mph becoming calm  in the evening.

    Low: 62 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 79. North wind 6 to 9 mph.

    High: 79 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 54. Northeast wind 10 to 15 mph.

    Low: 54 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 67. North wind 15 to 17 mph.

    High: 67 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 51. Northeast wind 11 to 14 mph.

    Low: 51 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 64.

    High: 64 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Friday Night

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

    Low: 56 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 62. Southeast wind around 5 mph becoming calm in the evening.
Tuesday
Partly sunny, with a high near 79. North wind 6 to 9 mph.
Tuesday Night
Partly cloudy, with a low around 54. Northeast wind 10 to 15 mph.
Wednesday
Sunny, with a high near 67. North wind 15 to 17 mph.
Wednesday Night
Clear, with a low around 51. Northeast wind 11 to 14 mph.
Thursday
Sunny, with a high near 64.
Thursday Night
Mostly clear, with a low around 51.
Friday
Sunny, with a high near 68.
Friday Night
Mostly clear, with a low around 56.
Saturday
Sunny, with a high near 73.
Saturday Night
Clear, with a low around 58.
Sunday
Sunny, with a high near 74.
Sunday Night
Mostly clear, with a low around 60.
Monday
Sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
Great River NY
 40.72°N 73.16°W (Elev. 13 ft)
1:36 pm EDT Sep 29, 2025
5pm EDT Sep 29, 2025-6pm EDT Oct 6, 2025
 
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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