Cold System Impacting California into Southwest/Four Corners; System Tracking From Mississippi Valley Into East, Possible Prelude To Much Stronger System

A storm digging through CA into the Southwest and Four Corners region will produce heavy mountain snow and showers. Further east, another storm will track from the Mid MS Valley to the Mid-Atlantic for a swath of snow and ice w/ locally heavy rain through Monday. By Tuesday, a stronger storm w/ a wealth of moisture will impact the eastern two-thirds w/ excessive rain, heavy snow and ice. Read More >

Hazardous Weather Conditions

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Mostly Cloudy

35°F

2°C

Humidity 46%
Wind Speed S 10 mph
Barometer 30.14 in (1020.5 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 17 Feb 12:56 pm EST
Extended Forecast for

West Sayville NY

  • This
    Afternoon

    This Afternoon: Partly sunny, with a high near 37. Calm wind becoming southeast around 5 mph.

    Partly Sunny

    High: 37 °F

  • Tonight

    Tonight: Snow before 1am, then rain or freezing rain.  Low around 31. Wind chill values between 25 and 30. Southeast wind 6 to 9 mph becoming east after midnight.  Chance of precipitation is 100%. New ice accumulation of less than a 0.1 of an inch possible.  New snow accumulation of 1 to 2 inches possible.

    Snow then
    Wintry Mix

    Low: 31 °F

  • Washington's
    Birthday

    Washington's Birthday: Rain likely, mainly before 10am.  Mostly cloudy, with a high near 38. Wind chill values between 25 and 30. East wind 7 to 9 mph becoming northwest in the afternoon.  Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Rain Likely

    High: 38 °F

  • Monday
    Night

    Monday Night: Mostly cloudy, then gradually becoming clear, with a low around 23. Wind chill values between 10 and 20. Northwest wind 11 to 14 mph.

    Decreasing
    Clouds

    Low: 23 °F

  • Tuesday

    Tuesday: Sunny, with a high near 35. Northwest wind around 9 mph.

    Sunny

    High: 35 °F

  • Tuesday
    Night

    Tuesday Night: Increasing clouds, with a low around 21.

    Increasing
    Clouds

    Low: 21 °F

  • Wednesday

    Wednesday: A 50 percent chance of snow after noon.  Mostly cloudy, with a high near 35.

    Mostly Cloudy
    then Chance
    Snow

    High: 35 °F

  • Wednesday
    Night

    Wednesday Night: Snow likely before midnight, then freezing rain and sleet likely between midnight and 3am, then rain likely after 3am.  Cloudy, with a low around 28. Chance of precipitation is 60%.

    Snow Likely
    then Wintry
    Mix Likely

    Low: 28 °F

  • Thursday

    Thursday: Rain likely, mainly before 9am.  Mostly cloudy, with a high near 43. Chance of precipitation is 60%.

    Rain Likely

    High: 43 °F

Detailed Forecast

This Afternoon
Partly sunny, with a high near 37. Calm wind becoming southeast around 5 mph.
Tonight
Snow before 1am, then rain or freezing rain. Low around 31. Wind chill values between 25 and 30. Southeast wind 6 to 9 mph becoming east after midnight. Chance of precipitation is 100%. New ice accumulation of less than a 0.1 of an inch possible. New snow accumulation of 1 to 2 inches possible.
Washington's Birthday
Rain likely, mainly before 10am. Mostly cloudy, with a high near 38. Wind chill values between 25 and 30. East wind 7 to 9 mph becoming northwest in the afternoon. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Mostly cloudy, then gradually becoming clear, with a low around 23. Wind chill values between 10 and 20. Northwest wind 11 to 14 mph.
Tuesday
Sunny, with a high near 35. Northwest wind around 9 mph.
Tuesday Night
Increasing clouds, with a low around 21.
Wednesday
A 50 percent chance of snow after noon. Mostly cloudy, with a high near 35.
Wednesday Night
Snow likely before midnight, then freezing rain and sleet likely between midnight and 3am, then rain likely after 3am. Cloudy, with a low around 28. Chance of precipitation is 60%.
Thursday
Rain likely, mainly before 9am. Mostly cloudy, with a high near 43. Chance of precipitation is 60%.
Thursday Night
Mostly cloudy, with a low around 30.
Friday
Mostly sunny, with a high near 41.
Friday Night
Partly cloudy, with a low around 31.
Saturday
A 30 percent chance of rain. Mostly cloudy, with a high near 43.
Click Map For Forecast
Point Forecast:
West Sayville NY
 40.74°N 73.1°W (Elev. 30 ft)
12:32 pm EST Feb 17, 2019
1pm EST Feb 17, 2019-6pm EST Feb 23, 2019
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database