National Weather Service United States Department of Commerce

Major nor'easter to affect northeastern U.S.

The stage is being set for a major nor'easter to affect parts of the Northeast Monday through Wednesday. This system will be responsible for heavy snowfall and strong winds, with blizzard conditions possible along coastal areas from New Jersey to Massachusetts. Blizzard Warnings are in effect along the coast from central New Jersey to the Canadian border.
Read More...

Current Conditions

En Español

Share |

Islip NY

7 Day Forecast

For More Weather Information:

New York, NY Local Forecast Office

Tonight

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

Low: 23 °F

Monday

Snow Chance for Measurable Precipitation 90%

Snow

High: 29 °F

Monday
Night

Heavy Snow Chance for Measurable Precipitation 100%

Heavy
Snow

Low: 20 °F

Tuesday

Heavy Snow Chance for Measurable Precipitation 100%

Heavy
Snow

High: 24 °F

Tuesday
Night

Snow Chance for Measurable Precipitation 80%

Snow

Low: 16 °F

Wednesday

Partly Sunny

Partly
Sunny

High: 28 °F

Wednesday
Night

Partly Cloudy

Partly
Cloudy

Low: 15 °F

Thursday

Partly Sunny

Partly
Sunny

High: 34 °F

Thursday
Night

Chance Rain/Snow Chance for Measurable Precipitation 40%

Chance
Rain/Snow

Low: 33 °F

Detailed Forecast

  • Tonight A chance of snow after 3am. Mostly cloudy, with a low around 23. Wind chill values between 15 and 20. North wind 5 to 11 mph. Chance of precipitation is 30%.
  • Monday A chance of snow before 9am, then snow likely between 9am and noon, then snow with widespread blowing snow after noon. High near 29. Wind chill values between 10 and 15. Blustery, with a northeast wind 15 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 90%. New snow accumulation of 2 to 4 inches possible.
  • Monday Night Snow with widespread blowing snow. The snow could be heavy at times. Some thunder is also possible. Low around 20. Wind chill values between zero and 10. Very windy, with a northeast wind 26 to 31 mph increasing to 35 to 40 mph after midnight. Winds could gust as high as 55 mph. Chance of precipitation is 100%. New snow accumulation of 12 to 18 inches possible.
  • Tuesday Snow with widespread blowing snow. The snow could be heavy at times. Some thunder is also possible. High near 24. Wind chill values between zero and 5. Windy, with a north wind around 39 mph, with gusts as high as 55 mph. Chance of precipitation is 100%. New snow accumulation of 7 to 11 inches possible.
  • Tuesday Night Snow with widespread blowing snow before 9pm, then snow likely with widespread blowing snow between 9pm and midnight, then widespread blowing snow and a chance of snow after midnight. Low around 16. Windy, with a northwest wind 32 to 37 mph decreasing to 20 to 25 mph after midnight. Winds could gust as high as 48 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
  • Wednesday Partly sunny, with a high near 28.
  • Wednesday Night Partly cloudy, with a low around 15.
  • Thursday Partly sunny, with a high near 34.
  • Thursday Night A chance of rain and snow. Cloudy, with a low around 33. Chance of precipitation is 40%.
  • Friday A chance of rain and snow. Mostly cloudy, with a high near 36. Chance of precipitation is 30%.
  • Friday Night Partly cloudy, with a low around 13.
  • Saturday Mostly sunny, with a high near 25.
  • Saturday Night Mostly cloudy, with a low around 10.
  • Sunday Mostly cloudy, with a high near 27.