National Weather Service United States Department of Commerce

Snow for Ohio Valley and northern mid-Atlantic Sunday into Monday

A clipper system will strengthen as it moves from the Midwest to the Ohio Valley on Sunday. Snow, some heavy, will spread from the Ohio Valley into parts of the lower Great Lakes and northern mid-Atlantic Sunday into Monday morning. The heaviest snow is expected from central Ohio into southwest Pennsylvania. Winter Weather Advisories are in effect for many of these locations.
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Current Conditions

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Port Jefferson NY

7 Day Forecast

For More Weather Information:

New York, NY Local Forecast Office

Today

Mostly Sunny

Mostly
Sunny

High: 38 °F

Tonight

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: 18 °F

Monday

Snow Chance for Measurable Precipitation 80%

Snow

High: 30 °F

Monday
Night

Heavy Snow Chance for Measurable Precipitation 90%

Heavy
Snow

Low: 26 °F

Tuesday

Heavy Snow Chance for Measurable Precipitation 90%

Heavy
Snow

High: 28 °F

Tuesday
Night

Chance Snow Chance for Measurable Precipitation 50%

Chance
Snow

Low: 17 °F

Wednesday

Decreasing Clouds

Decreasing
Clouds

High: 26 °F

Wednesday
Night

Partly Cloudy

Partly
Cloudy

Low: 17 °F

Thursday

Partly Sunny

Partly
Sunny

High: 33 °F

Detailed Forecast

  • Today Mostly sunny, with a high near 38. Wind chill values between 25 and 30. Northwest wind 11 to 18 mph.
  • Tonight A slight chance of snow after 1am. Increasing clouds, with a low around 18. Wind chill values between 10 and 15. Northeast wind 7 to 9 mph. Chance of precipitation is 20%.
  • Monday Snow likely before 1pm, then snow with areas of blowing snow after 1pm. High near 30. Wind chill values between 5 and 15. Blustery, with a northeast wind 10 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
  • Monday Night Snow with areas of blowing snow. The snow could be heavy at times. Low around 26. Wind chill values between 10 and 15. Windy, with a north wind 23 to 30 mph, with gusts as high as 43 mph. Chance of precipitation is 90%. New snow accumulation of 6 to 10 inches possible.
  • Tuesday Snow with areas of blowing snow. The snow could be heavy at times. High near 28. Windy, with a north wind 25 to 31 mph, with gusts as high as 44 mph. Chance of precipitation is 90%. New snow accumulation of 4 to 8 inches possible.
  • Tuesday Night A chance of snow, mainly before 1am. Cloudy, with a low around 17. Blustery. Chance of precipitation is 50%.
  • Wednesday Mostly cloudy, then gradually becoming sunny, with a high near 26.
  • Wednesday Night Partly cloudy, with a low around 17.
  • Thursday Partly sunny, with a high near 33.
  • Thursday Night A chance of snow. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.
  • Friday Partly sunny, with a high near 36.
  • Friday Night Partly cloudy, with a low around 18.
  • Saturday Mostly sunny, with a high near 29.