Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Hazardous Weather Conditions

Small Craft Advisory in effect from August 18, 07:00 AM EDT until August 18, 10:00 PM EDT

For More Weather Information:

Philadelphia, PA Local Forecast Office

20NM NNW Lewes DE

Marine Point Forecast

[NOTICE]

Monday
High: 76 °F
⇑ENE 20kt
1-2ft
Monday Night
Low: 70 °F
E 20kt
2ft
Tuesday
High: 74 °F
E 15kt
2ft
Tuesday Night
Low: 71 °F
E 15kt
1-2ft
Wednesday
High: 77 °F
E 15kt
1-2ft
Wednesday Night
Low: 70 °F
NE 15kt
2ft
Thursday
High: 78 °F
NNE 20kt
3ft
Thursday Night
Low: 69 °F
ENE 15kt
1-2ft
Friday
High: 77 °F
N 10kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:11 pm EDT Aug 17, 2025
Forecast Valid: 4am EDT Aug 18, 2025-6pm EDT Aug 24, 2025

View Nearby Observations

Detailed Forecast

Monday

NNE wind 10 to 15 kt becoming ENE 15 to 20 kt in the morning. A chance of showers, mainly between 4pm and 5pm. Waves 1 to 2 ft.

Monday Night

E wind 15 to 20 kt. A chance of showers, mainly between 7pm and 2am. Waves around 2 ft.

Tuesday

E wind around 15 kt. A slight chance of showers before 8am. Waves around 2 ft.

Tuesday Night

E wind 10 to 15 kt. A slight chance of showers before 2am. Waves 1 to 2 ft.

Wednesday

E wind 10 to 15 kt. A slight chance of showers after 8am. Waves 1 to 2 ft.

Wednesday Night

NE wind around 15 kt. Partly cloudy. Waves around 2 ft.

Thursday

NNE wind 15 to 20 kt. Mostly sunny. Waves 3 ft subsiding to 1 ft.

Thursday Night

ENE wind around 15 kt becoming N after midnight. Mostly clear. Waves 1 to 2 ft.

Friday

N wind 5 to 10 kt becoming ESE in the afternoon. Sunny. Waves around 1 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.