Areas of Dangerous Heat and Heavy Rainfall Today

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley today. Heat Advisories remain in effect. Heavy to excessive rainfall today could bring areas of flooding to parts of the northern High Plains and Midwest into the Ohio Valley. Flood Watches remain in effect. Read More >

Hazardous Weather Conditions

Small Craft Advisory in effect from September 21, 11:00 AM EDT until September 22, 11:00 AM EDT

For More Weather Information:

Philadelphia, PA Local Forecast Office

15NM NE Lewes DE

Marine Point Forecast

[NOTICE]

Tonight
Low: 63 °F
S 15kt⇓
1-2ft
Monday
High: 75 °F
NE 15kt
1-2ft
Monday Night
Low: 62 °F
ENE 15kt
2ft
Tuesday
High: 74 °F
⇑ENE 20kt
3ft
Tuesday Night
Low: 61 °F
ENE 25kt
4ft
Wednesday
High: 72 °F
NE 25kt
4ft
Wednesday Night
Low: 60 °F
NE 25kt
4ft
Thursday
High: 70 °F
NE 25kt
4ft
Thursday Night
Low: 58 °F
NE 25kt
5ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:15 pm EDT Sep 20, 2026
Forecast Valid: 6pm EDT Sep 20, 2026-6pm EDT Sep 27, 2026

View Nearby Observations

Detailed Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH

Tonight

S wind 10 to 15 kt becoming SW 5 to 8 kt in the evening. A chance of showers and thunderstorms. Seas 1 to 2 ft.

Monday

NE wind 10 to 15 kt. Partly sunny. Seas 1 to 2 ft.

Monday Night

ENE wind around 15 kt. A chance of showers, mainly after 5am. Seas around 2 ft.

Tuesday

ENE wind 15 to 18 kt increasing to 17 to 20 kt in the afternoon. Winds could gust as high as 30 kt. Showers likely, mainly after 7am. Seas around 3 ft.

Tuesday Night

ENE wind around 25 kt, with gusts as high as 35 kt. A chance of showers. Seas around 4 ft.

Wednesday

NE wind around 25 kt, with gusts as high as 35 kt. A chance of showers. Seas around 4 ft.

Wednesday Night

NE wind 20 to 25 kt, with gusts as high as 35 kt. A chance of showers after 2am. Seas 2 ft building to 4 ft.

Thursday

NE wind 20 to 25 kt, with gusts as high as 35 kt. A chance of showers. Seas 2 ft building to 4 ft.

Thursday Night

NE wind 20 to 25 kt, with gusts as high as 35 kt. A chance of showers. Seas 2 ft building to 5 ft.

*Notices:

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.
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.