Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

For More Weather Information:

Philadelphia, PA Local Forecast Office

21NM NE Lewes DE

Marine Point Forecast

[NOTICE]

Tonight
Low: 65 °F
E 10kt
2ft
Sunday
High: 77 °F
⇑S 15kt
2-3ft
Sunday Night
Low: 64 °F
S 10kt
2ft
Monday
High: 74 °F
NE 15kt
2ft
Monday Night
Low: 61 °F
ENE 15kt
2-3ft
Tuesday
High: 73 °F
ENE 20kt
3-4ft
Tuesday Night
Low: 63 °F
ENE 30kt
4-5ft
Wednesday
High: 70 °F
ENE 30kt
4-5ft
Wednesday Night
Low: 63 °F
NE 30kt
5-6ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:09 am EDT Sep 19, 2026
Forecast Valid: 4pm EDT Sep 19, 2026-6pm EDT Sep 26, 2026

View Nearby Observations

Detailed Forecast

Tonight

E wind 5 to 10 kt becoming ESE after midnight. Mostly cloudy. Seas around 2 ft.

Sunday

SE wind 5 to 8 kt becoming S 10 to 15 kt in the afternoon. Mostly sunny. Seas 2 to 3 ft.

Sunday Night

S wind 5 to 10 kt becoming W after midnight. Showers likely before 11pm, then showers likely and possibly a thunderstorm between 11pm and 2am, then showers likely after 2am. Seas around 2 ft.

Monday

NE wind 10 to 15 kt, with gusts as high as 20 kt. A chance of showers. Seas around 2 ft.

Monday Night

ENE wind around 15 kt, with gusts as high as 25 kt. A chance of showers. Seas 2 to 3 ft.

Tuesday

ENE wind 15 to 20 kt, with gusts as high as 30 kt. A chance of showers. Seas 3 to 4 ft.

Tuesday Night

ENE wind 25 to 30 kt. A chance of showers. Seas 4 to 5 ft.

Wednesday

ENE wind 25 to 30 kt. A chance of showers. Seas 4 to 5 ft.

Wednesday Night

NE wind around 30 kt. A chance of showers. Seas 5 to 6 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.