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

15NM NE Lewes DE

Marine Point Forecast

[NOTICE]

Tonight
Low: 66 °F
NE 10kt
1ft
Saturday
High: 74 °F
ENE 15kt
1-2ft
Saturday Night
Low: 68 °F
ESE 15kt
2ft
Sunday
High: 78 °F
S 15kt
2-3ft
Sunday Night
Low: 68 °F
S 15kt
2-3ft
Monday
High: 74 °F
⇑NE 15kt
2ft
Monday Night
Low: 64 °F
ENE 20kt
3-4ft
Tuesday
High: 73 °F
ENE 25kt
5-6ft
Tuesday Night
Low: 62 °F
ENE 25kt
6-7ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:12 pm EDT Sep 18, 2026
Forecast Valid: 4pm EDT Sep 18, 2026-6pm EDT Sep 25, 2026

View Nearby Observations

Detailed Forecast

Tonight

NE wind 5 to 10 kt. Mostly cloudy. Seas around 1 ft.

Saturday

ENE wind around 15 kt. Mostly sunny. Seas 1 to 2 ft.

Saturday Night

ESE wind 10 to 15 kt. Patchy fog after 2am. Seas around 2 ft.

Sunday

S wind 10 to 15 kt. Patchy fog before 8am. Seas 2 to 3 ft.

Sunday Night

S wind 10 to 15 kt becoming W after midnight. Showers likely and possibly a thunderstorm. Patchy fog after 11pm. Seas 2 to 3 ft.

Monday

N wind 10 to 13 kt becoming NE 12 to 15 kt in the afternoon. Winds could gust as high as 20 kt. Showers likely and possibly a thunderstorm before 2pm, then a chance of showers. Seas around 2 ft.

Monday Night

ENE wind 15 to 20 kt. A chance of showers. Seas 3 to 4 ft.

Tuesday

ENE wind 20 to 25 kt, with gusts as high as 35 kt. A chance of showers. Seas 5 to 6 ft.

Tuesday Night

ENE wind 20 to 25 kt, with gusts as high as 35 kt. A chance of showers. Seas 6 to 7 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.