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Severe weather threat continues on Sunday

The National Weather Service Storm Prediction Center expects an enhanced risk of severe weather on Sunday. The area of greatest concern is in north Texas and Oklahoma. In this area, large hail and damaging winds will be the primary threats, but a couple of tornadoes cannot be ruled out. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

40°F

4°C

Humidity 89%
Wind Speed NE 12 mph
Barometer 30.40 in (1029.6 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 26 Mar 12:56 am EDT
Extended Forecast for

Port Jefferson NY

  • Overnight

    Overnight: Mostly cloudy, with a low around 37. Wind chill values between 30 and 35. Northeast wind 10 to 14 mph.

    Mostly Cloudy

    Low: 37 °F

  • Sunday

    Sunday: A 30 percent chance of light rain, mainly after 9am.  Cloudy, with a high near 42. Wind chill values between 25 and 35. East wind 11 to 17 mph.

    Chance Light
    Rain

    High: 42 °F

  • Sunday
    Night

    Sunday Night: Light rain likely before 1am, then rain likely after 1am.  Patchy fog.  Otherwise, cloudy, with a low around 39. East wind 14 to 16 mph.  Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Light Rain
    Likely and
    Patchy Fog

    Low: 39 °F

  • Monday

    Monday: Rain.  Areas of fog. High near 51. East wind 9 to 11 mph becoming south in the afternoon.  Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Rain and
    Areas Fog

    High: 51 °F

  • Monday
    Night

    Monday Night: A 40 percent chance of rain, mainly before midnight.  Cloudy, with a low around 45. South wind 3 to 7 mph.

    Chance Rain

    Low: 45 °F

  • Tuesday

    Tuesday: A 30 percent chance of rain after noon.  Mostly cloudy, with a high near 59.

    Mostly Cloudy
    then Chance
    Rain

    High: 59 °F

  • Tuesday
    Night

    Tuesday Night: A 50 percent chance of rain.  Mostly cloudy, with a low around 43.

    Chance Rain

    Low: 43 °F

  • Wednesday

    Wednesday: Mostly sunny, with a high near 57.

    Mostly Sunny

    High: 57 °F

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 35.

    Mostly Clear

    Low: 35 °F

Detailed Forecast

Overnight
Mostly cloudy, with a low around 37. Wind chill values between 30 and 35. Northeast wind 10 to 14 mph.
Sunday
A 30 percent chance of light rain, mainly after 9am. Cloudy, with a high near 42. Wind chill values between 25 and 35. East wind 11 to 17 mph.
Sunday Night
Light rain likely before 1am, then rain likely after 1am. Patchy fog. Otherwise, cloudy, with a low around 39. East wind 14 to 16 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Rain. Areas of fog. High near 51. East wind 9 to 11 mph becoming south in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday Night
A 40 percent chance of rain, mainly before midnight. Cloudy, with a low around 45. South wind 3 to 7 mph.
Tuesday
A 30 percent chance of rain after noon. Mostly cloudy, with a high near 59.
Tuesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 43.
Wednesday
Mostly sunny, with a high near 57.
Wednesday Night
Mostly clear, with a low around 35.
Thursday
Sunny, with a high near 49.
Thursday Night
Partly cloudy, with a low around 35.
Friday
Partly sunny, with a high near 51.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 38.
Saturday
A 40 percent chance of rain. Mostly cloudy, with a high near 50.
Click Map For Forecast
Point Forecast:
Port Jefferson NY
 40.95°N 73.05°W (Elev. 151 ft)
11:25 pm EDT Mar 25, 2017
1am EDT Mar 26, 2017-6pm EDT Apr 1, 2017
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database