Extreme Heat Across the Southern U.S.; Severe Thunderstorms and Heavy Rain in the Plains and Mississippi Valley

A heat wave over the Southwest will intensify late week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Severe thunderstorms and heavy rain are expected over portions of the Plains and Mississippi Valley tonight, which will shift to parts of the Upper Midwest and mid-Mississippi Valley Friday. Monsoonal showers and flooding persist in the Desert Southwest. Read More >

For More Weather Information:

Philadelphia, PA Local Forecast Office

7NM SSE Lewes DE

Marine Point Forecast

[NOTICE]

Friday
High: 80 °F
Light Wind
1ft
Friday Night
Low: 71 °F
S 10kt
1-2ft
Saturday
High: 82 °F
⇑SSE 10kt
1-2ft
Saturday Night
Low: 73 °F
S 10kt
2ft
Sunday
High: 82 °F
⇑SSE 15kt
1-2ft
Sunday Night
Low: 74 °F
S 10kt
2ft
Monday
High: 83 °F
SSW 10kt
2ft
Monday Night
Low: 72 °F
SSW 10kt
1-2ft
Tuesday
High: 80 °F
SE 10kt
1-2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:08 am EDT Jul 31, 2026
Forecast Valid: 4am EDT Jul 31, 2026-6pm EDT Aug 6, 2026

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Detailed Forecast

Friday

Variable winds 5 kt or less. Sunny. Seas around 1 ft.

Friday Night

S wind 5 to 10 kt becoming SSW after midnight. Mostly clear. Seas 1 to 2 ft.

Saturday

SSW wind 5 to 8 kt becoming SSE 7 to 10 kt in the afternoon. Mostly sunny. Seas 1 to 2 ft.

Saturday Night

S wind around 10 kt. Partly cloudy. Seas around 2 ft.

Sunday

SSE wind 5 to 10 kt increasing to 10 to 15 kt in the afternoon. Mostly sunny. Seas 1 to 2 ft.

Sunday Night

S wind around 10 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Seas around 2 ft.

Monday

SSW wind around 10 kt. Showers likely, then showers and possibly a thunderstorm after 2pm. Seas around 2 ft.

Monday Night

SSW wind 5 to 10 kt. Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Seas 1 to 2 ft.

Tuesday

SE wind 5 to 10 kt. A chance of showers. Seas 1 to 2 ft.

Winds and seas higher in and near tstms.

*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.