National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Vigorous System Impacting the Northwest; Large System To Affect East

A potent storm system is delivering heavy rainfall, strong winds, rough surf and beach erosion along the Pacific Northwest coast with mountain snow inland. Expect a couple more systems to arrive late week into the weekend. Meanwhile, another developing large scale system will deliver a heavy rain and renewed flood threat to much of the East late Wednesday through Friday, which may impact travel. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

A Few Clouds

28°F

-2°C

Humidity 60%
Wind Speed NW 9 G 21 mph
Barometer 30.11 in (1019.7 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 18 Dec 9:56 pm EST
Extended Forecast for

West Sayville NY

  • Tonight

    Tonight: Mostly clear, with a low around 24. Wind chill values between 15 and 20. Northwest wind 8 to 13 mph becoming light after midnight.

    Mostly Clear

    Low: 24 °F

  • Wednesday

    Wednesday: Sunny, with a high near 41. Wind chill values between 20 and 30. Southwest wind 5 to 10 mph.

    Sunny

    High: 41 °F

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 33. Southwest wind 6 to 8 mph.

    Mostly Clear

    Low: 33 °F

  • Thursday

    Thursday: Increasing clouds, with a high near 49. Wind chill values between 30 and 40 early. Light and variable wind becoming southeast around 5 mph in the afternoon.

    Increasing
    Clouds

    High: 49 °F

  • Thursday
    Night

    Thursday Night: Rain. Temperature rising to around 54 by 5am. Breezy, with a southeast wind 6 to 11 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Rain and
    Breezy

    Low: 47 °F⇑

  • Friday

    Friday: Rain before noon, then showers after noon. High near 58. Breezy. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    Rain and
    Breezy

    High: 58 °F

  • Friday
    Night

    Friday Night: Showers likely, mainly before midnight. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.

    Showers
    Likely

    Low: 48 °F

  • Saturday

    Saturday: Partly sunny, with a high near 49. Breezy.

    Partly Sunny
    then Partly
    Sunny and
    Breezy

    High: 49 °F

  • Saturday
    Night

    Saturday Night: Partly cloudy, with a low around 33.

    Partly Cloudy

    Low: 33 °F

Detailed Forecast

Tonight
Mostly clear, with a low around 24. Wind chill values between 15 and 20. Northwest wind 8 to 13 mph becoming light after midnight.
Wednesday
Sunny, with a high near 41. Wind chill values between 20 and 30. Southwest wind 5 to 10 mph.
Wednesday Night
Mostly clear, with a low around 33. Southwest wind 6 to 8 mph.
Thursday
Increasing clouds, with a high near 49. Wind chill values between 30 and 40 early. Light and variable wind becoming southeast around 5 mph in the afternoon.
Thursday Night
Rain. Temperature rising to around 54 by 5am. Breezy, with a southeast wind 6 to 11 mph increasing to 17 to 22 mph after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Friday
Rain before noon, then showers after noon. High near 58. Breezy. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Friday Night
Showers likely, mainly before midnight. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Saturday
Partly sunny, with a high near 49. Breezy.
Saturday Night
Partly cloudy, with a low around 33.
Sunday
Sunny, with a high near 42.
Sunday Night
Partly cloudy, with a low around 33.
Monday
Mostly sunny, with a high near 41.
Monday Night
Mostly clear, with a low around 30.
Christmas Day
Mostly sunny, with a high near 40.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
West Sayville NY
 40.74°N 73.1°W (Elev. 30 ft)
Last Update:
10:08 pm EST Dec 18, 2018
Forecast Valid:
10pm EST Dec 18, 2018-6pm EST Dec 25, 2018
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation