Powerful Storm System To Bring A Plethora Of Impacts To The Central And Eastern U.S.

A vigorous storm system will track across the Rockies into the Plains Wednesday into Thursday. Damaging winds will be possible from New Mexico east across portions of western Texas, eastern Colorado, Kansas, and Oklahoma. Widespread rain, locally heavy will spread up the eastern seaboard bringing the threat for flooding, especially over areas that received recent heavy snow. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

35°F

2°C

Humidity 59%
Wind Speed W 5 mph
Barometer 30.19 in (1022.5 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 12 Dec 5:56 pm EST
Extended Forecast for

Port Jefferson NY

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. Wind chill values between 20 and 25. North wind 9 to 11 mph becoming east after midnight.

    Mostly Cloudy

    Low: 27 °F

  • Thursday

    Thursday: A slight chance of snow showers before noon, then a chance of rain and snow showers between noon and 1pm, then a chance of rain showers after 1pm.  Mostly cloudy, with a high near 40. Wind chill values between 15 and 25. East wind 10 to 13 mph.  Chance of precipitation is 40%.

    Slight Chance
    Snow Showers
    then Chance
    Rain/Snow

    High: 40 °F

  • Thursday
    Night

    Thursday Night: Mostly cloudy, with a low around 36. Wind chill values between 30 and 35. East wind 9 to 11 mph.

    Mostly Cloudy

    Low: 36 °F

  • Friday

    Friday: A 20 percent chance of rain after 3pm.  Partly sunny, with a high near 48. Wind chill values between 30 and 40 early. Southeast wind around 9 mph.

    Partly Sunny
    then Slight
    Chance Rain

    High: 48 °F

  • Friday
    Night

    Friday Night: Rain, mainly after 9pm.  Low around 42. Southeast wind 7 to 9 mph.  Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Rain

    Low: 42 °F

  • Saturday

    Saturday: Rain.  High near 51. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Rain

    High: 51 °F

  • Saturday
    Night

    Saturday Night: A 30 percent chance of rain before midnight.  Mostly cloudy, with a low around 38.

    Chance Rain
    then Mostly
    Cloudy

    Low: 38 °F

  • Sunday

    Sunday: Partly sunny, with a high near 45.

    Partly Sunny

    High: 45 °F

  • Sunday
    Night

    Sunday Night: Mostly cloudy, with a low around 36.

    Mostly Cloudy

    Low: 36 °F

Detailed Forecast

Tonight
Mostly cloudy, with a low around 27. Wind chill values between 20 and 25. North wind 9 to 11 mph becoming east after midnight.
Thursday
A slight chance of snow showers before noon, then a chance of rain and snow showers between noon and 1pm, then a chance of rain showers after 1pm. Mostly cloudy, with a high near 40. Wind chill values between 15 and 25. East wind 10 to 13 mph. Chance of precipitation is 40%.
Thursday Night
Mostly cloudy, with a low around 36. Wind chill values between 30 and 35. East wind 9 to 11 mph.
Friday
A 20 percent chance of rain after 3pm. Partly sunny, with a high near 48. Wind chill values between 30 and 40 early. Southeast wind around 9 mph.
Friday Night
Rain, mainly after 9pm. Low around 42. Southeast wind 7 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
Rain. High near 51. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
A 30 percent chance of rain before midnight. Mostly cloudy, with a low around 38.
Sunday
Partly sunny, with a high near 45.
Sunday Night
Mostly cloudy, with a low around 36.
Monday
Partly sunny, with a high near 45.
Monday Night
Partly cloudy, with a low around 33.
Tuesday
Mostly sunny, with a high near 40.
Tuesday Night
Mostly clear, with a low around 30.
Wednesday
Sunny, with a high near 43.
Click Map For Forecast
Point Forecast:
Port Jefferson NY
 40.95°N 73.05°W (Elev. 151 ft)
3:13 pm EST Dec 12, 2018
6pm EST Dec 12, 2018-6pm EST Dec 19, 2018
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database