Prolonged Atmospheric River in the Northwest; Snow in the North-Central US

A prolonged atmospheric river will bring heavy rainfall which may lead to widespread urban and river flooding, heavy mountain snow, along with gusty winds to the Pacific Northwest into the northern Rockies through much of the week. A clipper will bring a period of snow across the upper Midwest and the Great Lakes into Tuesday, before a stronger system bring more wintry impacts. Read More >

For More Weather Information:

Philadelphia, PA Local Forecast Office

16NM NNE Lewes DE

Marine Point Forecast

[NOTICE]
    • Today

      Today:NNE wind 5 to 10 kt becoming S in the afternoon. Sunny. Waves around 1 ft.

      High: 40 °F

      NNE 10kt
      1ft

    • Tonight

      Tonight:SW wind 10 to 15 kt, with gusts as high as 25 kt. Partly cloudy. Waves 1 to 2 ft.

      Low: 37 °F

      SW 15kt
      1-2ft

    • Wednesday

      Wednesday:SSW wind 15 to 20 kt, with gusts as high as 30 kt. A chance of rain after 1pm.   Waves 2 to 3 ft.

      High: 48 °F

      SSW 20kt
      2-3ft

    • Wednesday Night

      Wednesday Night:SW wind 20 to 25 kt becoming W after midnight. A slight chance of rain before 10pm.   Waves around 3 ft.

      Low: 36 °F

      W 25kt
      3ft

    • Thursday

      Thursday:WNW wind 20 to 25 kt. Mostly sunny. Waves around 3 ft.

      High: 41 °F

      WNW 25kt
      3ft

    • Thursday Night

      Thursday Night:WNW wind around 20 kt, with gusts as high as 25 kt. Partly cloudy. Waves 2 to 3 ft.

      Low: 32 °F

      WNW 20kt
      2-3ft

    • Friday

      Friday:W wind 10 to 15 kt. Mostly sunny. Waves around 2 ft.

      High: 40 °F

      W 15kt
      2ft

    • Friday Night

      Friday Night:WSW wind 10 to 15 kt. A chance of rain and snow before 1am.   Waves 1 to 2 ft.

      Low: 35 °F

      WSW 15kt
      1-2ft

    • Saturday

      Saturday:WSW wind 15 to 20 kt becoming WNW in the afternoon. Winds could gust as high as 25 kt. Partly sunny. Waves 3 to 4 ft.

      High: 43 °F

      WNW 20kt
      3-4ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:09 am EST Dec 9, 2025
Forecast Valid: 5am EST Dec 9, 2025-6pm EST Dec 15, 2025

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Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH

Today
NNE wind 5 to 10 kt becoming S in the afternoon. Sunny. Waves around 1 ft.
Tonight
SW wind 10 to 15 kt, with gusts as high as 25 kt. Partly cloudy. Waves 1 to 2 ft.
Wednesday
SSW wind 15 to 20 kt, with gusts as high as 30 kt. A chance of rain after 1pm. Waves 2 to 3 ft.
Wednesday Night
SW wind 20 to 25 kt becoming W after midnight. A slight chance of rain before 10pm. Waves around 3 ft.
Thursday
WNW wind 20 to 25 kt. Mostly sunny. Waves around 3 ft.
Thursday Night
WNW wind around 20 kt, with gusts as high as 25 kt. Partly cloudy. Waves 2 to 3 ft.
Friday
W wind 10 to 15 kt. Mostly sunny. Waves around 2 ft.
Friday Night
WSW wind 10 to 15 kt. A chance of rain and snow before 1am. Waves 1 to 2 ft.
Saturday
WSW wind 15 to 20 kt becoming WNW in the afternoon. Winds could gust as high as 25 kt. Partly sunny. Waves 3 to 4 ft.

*Notices:

  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.
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ABOUT THIS FORECAST

Point Forecast: 39.02°N 74.96°W
Last Update: 4:09 am EST Dec 9, 2025
Forecast Valid: 5am EST Dec 9, 2025-6pm EST Dec 15, 2025
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