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Strong Winds and Critical Fire Weather Conditions Likely over California

Critical fire weather conditions will continue over portions of California today. Very strong winds with gusts over 60 mph combined with dry humidity values will create an environment conducive to extreme fire danger and explosive fire growth over southern California. Winds are expected to diminish later today and tonight. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

33°F

1°C

Humidity 66%
Wind Speed N 5 mph
Barometer 30.23 in (1023.8 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 17 Dec 2:56 pm EST
Extended Forecast for

Port Jefferson NY

Winter Weather Advisory December 17, 10:00pm until December 18, 07:00am
Click here for hazard details and duration
Winter Weather Advisory
  • Tonight

    Tonight: Snow and sleet likely before 1am, then rain likely.  Cloudy, with a low around 33. Calm wind becoming east 5 to 7 mph in the evening.  Chance of precipitation is 60%. Total nighttime snow and sleet accumulation of less than a half inch possible.

    Wintry Mix
    Likely

    Low: 33 °F

  • Monday

    Monday: A 30 percent chance of light rain, mainly before 7am.  Cloudy, with a high near 44. Wind chill values between 25 and 35. East wind 5 to 9 mph becoming west in the afternoon.

    Chance Light
    Rain then
    Cloudy

    High: 44 °F

  • Monday
    Night

    Monday Night: Cloudy, then gradually becoming partly cloudy, with a low around 35. West wind 8 to 10 mph.

    Decreasing
    Clouds

    Low: 35 °F

  • Tuesday

    Tuesday: Partly sunny, with a high near 50. Wind chill values between 30 and 40 early. West wind 8 to 16 mph.

    Partly Sunny

    High: 50 °F

  • Tuesday
    Night

    Tuesday Night: Mostly cloudy, with a low around 37. West wind 14 to 17 mph.

    Mostly Cloudy

    Low: 37 °F

  • Wednesday

    Wednesday: Mostly sunny, with a high near 42.

    Mostly Sunny

    High: 42 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 26.

    Partly Cloudy

    Low: 26 °F

  • Thursday

    Thursday: Mostly sunny, with a high near 38.

    Mostly Sunny

    High: 38 °F

  • Thursday
    Night

    Thursday Night: Mostly cloudy, with a low around 27.

    Mostly Cloudy

    Low: 27 °F

Detailed Forecast

Tonight
Snow and sleet likely before 1am, then rain likely. Cloudy, with a low around 33. Calm wind becoming east 5 to 7 mph in the evening. Chance of precipitation is 60%. Total nighttime snow and sleet accumulation of less than a half inch possible.
Monday
A 30 percent chance of light rain, mainly before 7am. Cloudy, with a high near 44. Wind chill values between 25 and 35. East wind 5 to 9 mph becoming west in the afternoon.
Monday Night
Cloudy, then gradually becoming partly cloudy, with a low around 35. West wind 8 to 10 mph.
Tuesday
Partly sunny, with a high near 50. Wind chill values between 30 and 40 early. West wind 8 to 16 mph.
Tuesday Night
Mostly cloudy, with a low around 37. West wind 14 to 17 mph.
Wednesday
Mostly sunny, with a high near 42.
Wednesday Night
Partly cloudy, with a low around 26.
Thursday
Mostly sunny, with a high near 38.
Thursday Night
Mostly cloudy, with a low around 27.
Friday
Mostly cloudy, with a high near 50.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 45.
Saturday
A 30 percent chance of rain. Mostly cloudy, with a high near 52.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 37.
Sunday
A 30 percent chance of rain. Mostly cloudy, with a high near 45.
Click Map For Forecast
Point Forecast:
Port Jefferson NY
 40.95°N 73.05°W (Elev. 151 ft)
3:49 pm EST Dec 17, 2017
3pm EST Dec 17, 2017-6pm EST Dec 24, 2017
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database