Powerful Storm to Impact Eastern Third of U.S. this weekend.

A developing storm system will bring a myriad of significant impacts this weekend. Heavy snow up to 18 inches from the Ohio Valley to the Northeast, and ice up to a quarter of an inch is forecast in places. Heavy rain may cause flash flooding from the Mid-South to the Mid-Atlantic. Severe thunderstorms with damaging winds and isolated tornadoes will be possible in the Deep South. Read More >

Current conditions at

Islip, Long Island Mac Arthur Airport (KISP)

Lat: 40.79°NLon: 73.1°WElev: 98ft.

Overcast

36°F

2°C

Humidity 55%
Wind Speed NE 9 mph
Barometer 30.27 in (1024.9 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 19 Jan 10:56 am EST
Extended Forecast for

Patchogue NYSimilar City Names

Coastal Flood Advisory January 20, 06:00am until January 20, 01:00pm
Click here for hazard details and duration
Coastal Flood Advisory
  • Today

    Today: A 40 percent chance of snow after 4pm.  Mostly cloudy, with a high near 37. Wind chill values between 25 and 30. East wind 8 to 10 mph.

    Chance Snow

    High: 37 °F

  • Tonight

    Tonight: Snow before 10pm, then rain. The rain could be heavy at times.  Temperature rising to around 41 by 4am. Wind chill values between 20 and 25. Breezy, with an east wind 13 to 20 mph.  Chance of precipitation is 100%. New snow accumulation of less than one inch possible.

    Breezy.
    Rain/Snow
    then Heavy
    Rain

    Low: 33 °F

  • Sunday

    Sunday: Rain before 4pm, then a slight chance of freezing rain and sleet. The rain could be heavy at times.  Temperature rising to near 42 by 9am, then falling to around 27 during the remainder of the day. Wind chill values between 15 and 25. Breezy, with an east wind 7 to 12 mph becoming northwest 16 to 21 mph in the afternoon. Winds could gust as high as 37 mph.  Chance of precipitation is 100%. Little or no ice accumulation expected.  Little or no sleet accumulation expected.

    Heavy Rain
    then Wintry
    Mix Likely
    and Breezy

    High: 42 °F

  • Sunday
    Night

    Sunday Night: Mostly cloudy, with a low around 9. Wind chill values between -10 and zero. Blustery, with a northwest wind 22 to 24 mph, with gusts as high as 39 mph.

    Mostly Cloudy
    and Blustery

    Low: 9 °F

  • M.L.King
    Day

    M.L.King Day: Mostly sunny and cold, with a high near 16. Blustery, with a northwest wind around 23 mph, with gusts as high as 34 mph.

    Cold and
    Blustery

    High: 16 °F

  • Monday
    Night

    Monday Night: Mostly clear, with a steady temperature around 13. Blustery.

    Mostly Clear
    and Blustery

    Low: 13 °F

  • Tuesday

    Tuesday: Sunny, with a high near 29.

    Sunny

    High: 29 °F

  • Tuesday
    Night

    Tuesday Night: Mostly cloudy, with a low around 26.

    Mostly Cloudy

    Low: 26 °F

  • Wednesday

    Wednesday: A chance of rain and sleet before 7am, then a chance of rain.  Mostly cloudy, with a high near 46. Chance of precipitation is 40%.

    Chance
    Rain/Sleet
    then Chance
    Rain

    High: 46 °F

Detailed Forecast

Today
A 40 percent chance of snow after 4pm. Mostly cloudy, with a high near 37. Wind chill values between 25 and 30. East wind 8 to 10 mph.
Tonight
Snow before 10pm, then rain. The rain could be heavy at times. Temperature rising to around 41 by 4am. Wind chill values between 20 and 25. Breezy, with an east wind 13 to 20 mph. Chance of precipitation is 100%. New snow accumulation of less than one inch possible.
Sunday
Rain before 4pm, then a slight chance of freezing rain and sleet. The rain could be heavy at times. Temperature rising to near 42 by 9am, then falling to around 27 during the remainder of the day. Wind chill values between 15 and 25. Breezy, with an east wind 7 to 12 mph becoming northwest 16 to 21 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 100%. Little or no ice accumulation expected. Little or no sleet accumulation expected.
Sunday Night
Mostly cloudy, with a low around 9. Wind chill values between -10 and zero. Blustery, with a northwest wind 22 to 24 mph, with gusts as high as 39 mph.
M.L.King Day
Mostly sunny and cold, with a high near 16. Blustery, with a northwest wind around 23 mph, with gusts as high as 34 mph.
Monday Night
Mostly clear, with a steady temperature around 13. Blustery.
Tuesday
Sunny, with a high near 29.
Tuesday Night
Mostly cloudy, with a low around 26.
Wednesday
A chance of rain and sleet before 7am, then a chance of rain. Mostly cloudy, with a high near 46. Chance of precipitation is 40%.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 39.
Thursday
A 40 percent chance of rain. Partly sunny, with a high near 43.
Thursday Night
A 30 percent chance of snow. Partly cloudy, with a low around 28.
Friday
Mostly sunny, with a high near 35.
Click Map For Forecast
Point Forecast:
Patchogue NYSimilar City Names
 40.77°N 73°W (Elev. 43 ft)
9:38 am EST Jan 19, 2019
11am EST Jan 19, 2019-6pm EST Jan 25, 2019
 
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Additional Resources

Radar & Satellite Image

Northeast Radar Mosaic Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database