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Heavy Snow & Ice Across Portions of the Plains and Midwest; Unsettled in the Pacific Northwest

Heavy snow and freezing rain will impact portions of the Plains, upper Midwest, and Great Lakes into Monday. Significant snow accumulations and gusty winds are likely in some areas. Farther to the south, rain and a few thunderstorms are expected over the Mississippi, Tennessee, and Ohio Valleys. Heavy rain & mountain snowfall will also continue from northern California into the Pacific Northwest. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Fog/Mist

44°F

7°C

Humidity 93%
Wind Speed Calm
Barometer 30.16 in (1021.3 mb)
Dewpoint 42°F (6°C)
Visibility 6.00 mi
Last update 22 Jan 6:56 am EST
Extended Forecast for

Port Jefferson NY

  • Today

    Today: Patchy drizzle and fog with a chance of rain.  Cloudy, with a high near 44. Calm wind becoming east around 6 mph in the afternoon.

    Chance Rain
    and Patchy
    Fog

    High: 44 °F

  • Tonight

    Tonight: Patchy drizzle with a slight chance of rain before midnight, then a chance of showers after midnight.  Patchy fog before midnight.  Otherwise, cloudy, with a low around 42. East wind 6 to 9 mph.  Chance of precipitation is 40%.

    Chance
    Showers and
    Patchy Fog

    Low: 42 °F

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm.  High near 53. Breezy, with a south wind 14 to 21 mph.  Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Showers and
    Breezy

    High: 53 °F

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 35. Wind chill values between 25 and 30. West wind around 16 mph.

    Partly Cloudy

    Low: 35 °F

  • Wednesday

    Wednesday: Sunny, with a high near 40. West wind 15 to 17 mph.

    Sunny

    High: 40 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 23.

    Partly Cloudy

    Low: 23 °F

  • Thursday

    Thursday: Sunny, with a high near 33.

    Sunny

    High: 33 °F

  • Thursday
    Night

    Thursday Night: Clear, with a low around 18.

    Clear

    Low: 18 °F

  • Friday

    Friday: Sunny, with a high near 34.

    Sunny

    High: 34 °F

Detailed Forecast

Today
Patchy drizzle and fog with a chance of rain. Cloudy, with a high near 44. Calm wind becoming east around 6 mph in the afternoon.
Tonight
Patchy drizzle with a slight chance of rain before midnight, then a chance of showers after midnight. Patchy fog before midnight. Otherwise, cloudy, with a low around 42. East wind 6 to 9 mph. Chance of precipitation is 40%.
Tuesday
Showers and possibly a thunderstorm. High near 53. Breezy, with a south wind 14 to 21 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday Night
Partly cloudy, with a low around 35. Wind chill values between 25 and 30. West wind around 16 mph.
Wednesday
Sunny, with a high near 40. West wind 15 to 17 mph.
Wednesday Night
Partly cloudy, with a low around 23.
Thursday
Sunny, with a high near 33.
Thursday Night
Clear, with a low around 18.
Friday
Sunny, with a high near 34.
Friday Night
Mostly clear, with a low around 26.
Saturday
Mostly sunny, with a high near 45.
Saturday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 39.
Sunday
A 50 percent chance of rain. Cloudy, with a high near 50.
Click Map For Forecast
Point Forecast:
Port Jefferson NY
 40.95°N 73.05°W (Elev. 151 ft)
5:28 am EST Jan 22, 2018
7am EST Jan 22, 2018-6pm EST Jan 28, 2018
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database