National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

70°F

21°C

Humidity 66%
Wind Speed SE 8 mph
Barometer 30.26 in (1024.6 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 16 Sep 5:56 pm EDT
Extended Forecast for

Port Jefferson Station NY

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 59. East wind 5 to 8 mph becoming calm after midnight.

    Low: 59 °F

    Partly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 8am. Otherwise, partly sunny, with a high near 76. East wind 7 to 10 mph.

    High: 76 °F

    Patchy Fog
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 62. East wind 5 to 8 mph.

    Low: 62 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of showers. Mostly cloudy, with a high near 73. Northeast wind 11 to 14 mph.

    High: 73 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers. Cloudy, with a low around 63. Northeast wind around 10 mph.

    Low: 63 °F

    Chance
    Showers

  • Thursday

    Thursday: A 40 percent chance of showers. Mostly cloudy, with a high near 73.

    High: 73 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 63.

    Low: 63 °F

    Chance
    Showers

  • Friday

    Friday: A 30 percent chance of showers before 2pm. Mostly cloudy, with a high near 73.

    High: 73 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 59.

    Low: 59 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 59. East wind 5 to 8 mph becoming calm after midnight.
Tuesday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 76. East wind 7 to 10 mph.
Tuesday Night
Mostly cloudy, with a low around 62. East wind 5 to 8 mph.
Wednesday
A 50 percent chance of showers. Mostly cloudy, with a high near 73. Northeast wind 11 to 14 mph.
Wednesday Night
A 50 percent chance of showers. Cloudy, with a low around 63. Northeast wind around 10 mph.
Thursday
A 40 percent chance of showers. Mostly cloudy, with a high near 73.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 63.
Friday
A 30 percent chance of showers before 2pm. Mostly cloudy, with a high near 73.
Friday Night
Mostly cloudy, with a low around 59.
Saturday
Partly sunny, with a high near 69.
Saturday Night
Mostly cloudy, with a low around 56.
Sunday
Mostly sunny, with a high near 68.
Sunday Night
Partly cloudy, with a low around 56.
Monday
Mostly sunny, with a high near 70.
Click Map For Forecast
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ABOUT THIS FORECAST

 
Point Forecast:
Port Jefferson Station NY
 40.93°N 73.06°W (Elev. 161 ft)
Last Update:
6:24 pm EDT Sep 16, 2024
Forecast Valid:
6pm EDT Sep 16, 2024-6pm EDT Sep 23, 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