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

Claudette Moving Across the Southeast; Severe Storms Midwest and Great Lakes

Claudette is expected to become a tropical storm while moving across the Southeast with gusty winds, heavy rain with flash flooding, and a couple of tornadoes. Scattered storms with all hazards and heavy rain that could cause flash flooding are expected in the Midwest to the Great Lakes, with isolated storms into the East. Dangerous heat and critical fire weather threats persist in the West. 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 74%
Wind Speed SW 10 mph
Barometer 29.80 in (1009.2 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 20 Jun 6:56 pm EDT
Extended Forecast for

Port Jefferson NY

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 8pm. Patchy fog after 2am. Otherwise, partly cloudy, with a low around 68. South wind 6 to 10 mph.

    Slight Chance
    T-storms then
    Patchy Fog

    Low: 68 °F

  • Monday

    Monday: Patchy fog before 8am. Otherwise, partly sunny, with a high near 85. South wind 8 to 16 mph.

    Patchy Fog
    then Partly
    Sunny

    High: 85 °F

  • Monday
    Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly after 11pm. Mostly cloudy, with a low around 67. South wind 5 to 14 mph.

    Chance
    Showers

    Low: 67 °F

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely after 11am. Mostly cloudy, with a high near 79. Northwest wind 7 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Showers
    Likely

    High: 79 °F

  • Tuesday
    Night

    Tuesday Night: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 58. Northwest wind around 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Showers
    Likely then
    Slight Chance
    Showers

    Low: 58 °F

  • Wednesday

    Wednesday: Mostly sunny, with a high near 77.

    Mostly Sunny

    High: 77 °F

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 59.

    Mostly Clear

    Low: 59 °F

  • Thursday

    Thursday: Sunny, with a high near 77.

    Sunny

    High: 77 °F

  • Thursday
    Night

    Thursday Night: Mostly clear, with a low around 59.

    Mostly Clear

    Low: 59 °F

Detailed Forecast

Tonight
A 20 percent chance of showers and thunderstorms before 8pm. Patchy fog after 2am. Otherwise, partly cloudy, with a low around 68. South wind 6 to 10 mph.
Monday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 85. South wind 8 to 16 mph.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly after 11pm. Mostly cloudy, with a low around 67. South wind 5 to 14 mph.
Tuesday
A chance of showers and thunderstorms, then showers likely after 11am. Mostly cloudy, with a high near 79. Northwest wind 7 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 58. Northwest wind around 9 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Mostly sunny, with a high near 77.
Wednesday Night
Mostly clear, with a low around 59.
Thursday
Sunny, with a high near 77.
Thursday Night
Mostly clear, with a low around 59.
Friday
Mostly sunny, with a high near 78.
Friday Night
Mostly cloudy, with a low around 64.
Saturday
A 30 percent chance of showers. Partly sunny, with a high near 81.
Saturday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 67.
Sunday
A 50 percent chance of showers. Partly sunny, with a high near 82.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Port Jefferson NY
 40.93°N 73.06°W (Elev. 161 ft)
Last Update:
6:59 pm EDT Jun 20, 2021
Forecast Valid:
7pm EDT Jun 20, 2021-6pm EDT Jun 27, 2021
 
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