Dangerous Winter Storm over the Northern Plains, Severe Weather in the southeast U.S.

A significant winter storm will bring heavy snow and blizzard conditions over portions of the northern Plains, primarily North Dakota through Tuesday. Snowfall amounts could reach one foot leading to dangerous travel conditions. Strong winds and very cold temperatures will also yield sub zero wind chill readings. Over the southeast U.S, strong to severe thunderstorms will be possible on Tuesday. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

36°F

2°C

Humidity 86%
Wind Speed Calm
Barometer 30.14 in (1020.8 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 6 Dec 8:56 am EST
Extended Forecast for

Holtsville NY

  • Today

    Today: A 30 percent chance of light rain after 5pm.  Increasing clouds, with a high near 47. Northeast wind 8 to 10 mph becoming east in the afternoon.

    Mostly Sunny
    then Chance
    Light Rain

    High: 47 °F

  • Tonight

    Tonight: Rain.  Low around 42. East wind 9 to 14 mph.  Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Rain

    Low: 42 °F

  • Wednesday

    Wednesday: A chance of drizzle or light rain, mainly before noon.  Mostly cloudy, with a high near 49. Northeast wind 5 to 9 mph becoming northwest in the afternoon.  Chance of precipitation is 30%.

    Chance Light
    Rain

    High: 49 °F

  • Wednesday
    Night

    Wednesday Night: Mostly cloudy, with a low around 35. Northwest wind around 6 mph becoming calm  in the evening.

    Mostly Cloudy

    Low: 35 °F

  • Thursday

    Thursday: A slight chance of sprinkles after 1pm.  Mostly cloudy, with a high near 45. Light west wind increasing to 6 to 11 mph in the morning.

    Slight Chance
    Sprinkles

    High: 45 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 30.

    Partly Cloudy

    Low: 30 °F

  • Friday

    Friday: Mostly sunny, with a high near 40. Breezy.

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

    High: 40 °F

  • Friday
    Night

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

    Partly Cloudy

    Low: 23 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 36.

    Mostly Sunny

    High: 36 °F

Detailed Forecast

Today
A 30 percent chance of light rain after 5pm. Increasing clouds, with a high near 47. Northeast wind 8 to 10 mph becoming east in the afternoon.
Tonight
Rain. Low around 42. East wind 9 to 14 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
A chance of drizzle or light rain, mainly before noon. Mostly cloudy, with a high near 49. Northeast wind 5 to 9 mph becoming northwest in the afternoon. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 35. Northwest wind around 6 mph becoming calm in the evening.
Thursday
A slight chance of sprinkles after 1pm. Mostly cloudy, with a high near 45. Light west wind increasing to 6 to 11 mph in the morning.
Thursday Night
Partly cloudy, with a low around 30.
Friday
Mostly sunny, with a high near 40. Breezy.
Friday Night
Partly cloudy, with a low around 23.
Saturday
Mostly sunny, with a high near 36.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Partly sunny, with a high near 42.
Sunday Night
A 30 percent chance of rain. Cloudy, with a low around 34.
Monday
A 40 percent chance of rain. Mostly cloudy, with a high near 50.
Click Map For Forecast
Point Forecast:
Holtsville NY
 40.82°N 73.05°W (Elev. 112 ft)
6:26 am EST Dec 6, 2016
9am EST Dec 6, 2016-6pm EST Dec 12, 2016
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database