Notice of NWS' New Version of Forecast
A new version of Forecast is coming soon!
Click here to visit the new site for details.

Threat of dangerous surf and rip currents continues for East Coast due to Jose

Tropical Storm Jose will continue to weaken as it moves northeastward then returns southwestward while remaining off the Northeast coast. Jose will produce rain with embedded thunderstorms over parts of coastal Southern New England through Friday. Swells generated by Jose will bring the risk of dangerous surf and rip current conditions for much of the U.S. east coast during the next several days. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

73°F

23°C

Humidity 76%
Wind Speed N 8 mph
Barometer 29.88 in (1011.8 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 20 Sep 10:56 pm EDT
Extended Forecast for

Port Jefferson NY

  • Tonight

    Tonight: Mostly cloudy, with a low around 67. North wind 13 to 15 mph.

    Mostly Cloudy

    Low: 67 °F

  • Thursday

    Thursday: Partly sunny, with a high near 80. Breezy, with a north wind 16 to 20 mph.

    Partly Sunny
    and Breezy

    High: 80 °F

  • Thursday
    Night

    Thursday Night: Mostly cloudy, with a low around 62. North wind 11 to 15 mph.

    Mostly Cloudy

    Low: 62 °F

  • Friday

    Friday: Partly sunny, with a high near 73. North wind around 15 mph.

    Partly Sunny

    High: 73 °F

  • Friday
    Night

    Friday Night: Mostly cloudy, with a low around 64. North wind 13 to 15 mph.

    Mostly Cloudy

    Low: 64 °F

  • Saturday

    Saturday: Partly sunny, with a high near 77.

    Partly Sunny

    High: 77 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 66.

    Partly Cloudy

    Low: 66 °F

  • Sunday

    Sunday: Mostly sunny, with a high near 79.

    Mostly Sunny

    High: 79 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 67.

    Partly Cloudy

    Low: 67 °F

Detailed Forecast

Tonight
Mostly cloudy, with a low around 67. North wind 13 to 15 mph.
Thursday
Partly sunny, with a high near 80. Breezy, with a north wind 16 to 20 mph.
Thursday Night
Mostly cloudy, with a low around 62. North wind 11 to 15 mph.
Friday
Partly sunny, with a high near 73. North wind around 15 mph.
Friday Night
Mostly cloudy, with a low around 64. North wind 13 to 15 mph.
Saturday
Partly sunny, with a high near 77.
Saturday Night
Partly cloudy, with a low around 66.
Sunday
Mostly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 67.
Monday
Mostly sunny, with a high near 80.
Monday Night
Mostly cloudy, with a low around 67.
Tuesday
Partly sunny, with a high near 79.
Tuesday Night
Mostly cloudy, with a low around 66.
Wednesday
A 30 percent chance of showers. Mostly cloudy, with a high near 75.
Click Map For Forecast
Point Forecast:
Port Jefferson NY
 40.95°N 73.05°W (Elev. 151 ft)
9:43 pm EDT Sep 20, 2017
11pm EDT Sep 20, 2017-6pm EDT Sep 27, 2017
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database