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Fire Weather Threats out West; Wintry Weather Upper Midwest to the Middle Atlantic

High pressure in the west continues to send weather systems into the Great Basin, and this is keeping fire weather threats elevated to critical across southern California. A series of weather systems will bring widespread snow from the Upper Midwest to the Middle Atlantic and Northeast, with heavier snow amounts in lake effect snow bands near the Great Lakes. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Light Snow Fog/Mist

24°F

-4°C

Humidity 91%
Wind Speed NE 5 mph
Barometer 29.60 in (1002.3 mb)
Dewpoint 22°F (-6°C)
Visibility 1.50 mi
Wind Chill18°F (-8°C)
Last update 14 Dec 2:56 am EST
Extended Forecast for

Stony Brook NY

Winter Weather Advisory until December 14, 10:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until December 14, 10:00am

    NOW until
    10:00am Thu

    Winter Weather Advisory

  • Overnight

    Overnight: Snow.  Low around 26. West wind around 7 mph.  Chance of precipitation is 80%. Total nighttime snow accumulation of 1 to 3 inches possible.

    Snow

    Low: 26 °F

  • Thursday

    Thursday: Snow, mainly before 9am.  High near 34. Wind chill values between 20 and 25. North wind 6 to 15 mph becoming northwest in the afternoon.  Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Snow then
    Mostly Sunny

    High: 34 °F

  • Thursday
    Night

    Thursday Night: Mostly clear, with a low around 19. Wind chill values between 10 and 15. Northwest wind 8 to 15 mph.

    Mostly Clear

    Low: 19 °F

  • Friday

    Friday: Partly sunny, with a high near 31. Wind chill values between 15 and 25. West wind 3 to 6 mph.

    Partly Sunny

    High: 31 °F

  • Friday
    Night

    Friday Night: A 20 percent chance of snow before 3am.  Mostly cloudy, with a steady temperature around 30. West wind 5 to 11 mph, with gusts as high as 21 mph.

    Slight Chance
    Snow

    Low: 30 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 37. Breezy.

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

    High: 37 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 25.

    Mostly Clear

    Low: 25 °F

  • Sunday

    Sunday: Mostly sunny, with a high near 39.

    Mostly Sunny

    High: 39 °F

Detailed Forecast

Overnight
Snow. Low around 26. West wind around 7 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 1 to 3 inches possible.
Thursday
Snow, mainly before 9am. High near 34. Wind chill values between 20 and 25. North wind 6 to 15 mph becoming northwest in the afternoon. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Thursday Night
Mostly clear, with a low around 19. Wind chill values between 10 and 15. Northwest wind 8 to 15 mph.
Friday
Partly sunny, with a high near 31. Wind chill values between 15 and 25. West wind 3 to 6 mph.
Friday Night
A 20 percent chance of snow before 3am. Mostly cloudy, with a steady temperature around 30. West wind 5 to 11 mph, with gusts as high as 21 mph.
Saturday
Mostly sunny, with a high near 37. Breezy.
Saturday Night
Mostly clear, with a low around 25.
Sunday
Mostly sunny, with a high near 39.
Sunday Night
A chance of rain and snow before 11pm, then a chance of rain between 11pm and 2am. Mostly cloudy, with a low around 33. Chance of precipitation is 30%.
Monday
Partly sunny, with a high near 47.
Monday Night
Mostly cloudy, with a low around 35.
Tuesday
Partly sunny, with a high near 46.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
Mostly sunny, with a high near 41. Breezy.
Click Map For Forecast
Point Forecast:
Stony Brook NY
 40.92°N 73.12°W (Elev. 112 ft)
12:52 am EST Dec 14, 2017
3am EST Dec 14, 2017-6pm EST Dec 20, 2017
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database