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

5NM SSE Lewes DE

Marine Point Forecast

[NOTICE]

Overnight
Low: 70 °F
NE 10kt
2ft
Saturday
High: 73 °F
ENE 15kt
3ft
Saturday Night
Low: 69 °F
E 10kt
2ft
Sunday
High: 78 °F
S 15kt
2-3ft
Sunday Night
Low: 70 °F
S 10kt
2ft
Monday
High: 74 °F
⇑NE 15kt
2ft
Monday Night
Low: 67 °F
ENE 20kt
3-4ft
Tuesday
High: 71 °F
⇑ENE 25kt
6ft
Tuesday Night
Low: 65 °F
ENE 25kt
6ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:10 pm EDT Sep 18, 2026
Forecast Valid: 11pm EDT Sep 18, 2026-6pm EDT Sep 25, 2026

View Nearby Observations

Detailed Forecast

Overnight

NE wind 5 to 10 kt. Mostly cloudy. Seas around 2 ft.

Saturday

ENE wind around 15 kt. Mostly sunny. Seas around 3 ft.

Saturday Night

E wind around 10 kt becoming SE after midnight. 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 5 to 10 kt becoming WSW after midnight. Showers likely and possibly a thunderstorm. Patchy fog after 11pm. Seas around 2 ft.

Monday

N wind 10 to 13 kt becoming NE 12 to 15 kt in the afternoon. Showers likely before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. 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 23 kt increasing to 22 to 25 kt in the afternoon. Winds could gust as high as 35 kt. A chance of showers. Seas 4 ft building to 6 ft.

Tuesday Night

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