Heat and Fire Weather Concerns West; Heavy Rain and Thunderstorms from Plains to mid-Atlantic

Thunderstorms and locally heavy rainfall is expected from the Central Plains to the Ohio Valley, mid-Atlantic and across the Southeast. Severe weather from the Upper Midwest to Central Plains increases on Friday. Major to Extreme HeatRisk continues across the Southern Plains to the lower Mississippi Valley late this week. Fire weather concerns for the northern Rockies and northern Plains today. Read More >

Last Update: 401 PM EDT Thu Sep 10 2026

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Philadelphia, PA Local Forecast Office

19NM NNE Lewes DE

Marine Zone Forecast

Tonight

SW winds around 5 kt, becoming NW late. Seas around 2 ft this evening, then 1 foot or less. Wave detail: W 1 foot at 2 seconds and S 1 foot at 6 seconds, becoming S 1 foot at 6 seconds. A chance of showers with a slight chance of tstms after midnight.

Fri

NE winds 5 to 10 kt. Seas around 2 ft. Wave detail: E 2 ft at 6 seconds. Showers likely in the morning.

Fri Night

SE winds around 5 kt. Seas around 2 ft in the evening, then 1 foot or less. Wave detail: SE 1 foot at 6 seconds, becoming SE 1 foot at 2 seconds.

Sat

SE winds 10 to 15 kt. Seas 1 to 2 ft. Wave detail: SE 2 ft at 3 seconds.

Sat Night

SE winds 10 to 15 kt with gusts up to 20 kt, becoming S 5 to 10 kt after midnight. Seas around 2 ft. Wave detail: SE 2 ft at 4 seconds and SE 1 foot at 9 seconds. A chance of showers in the evening, then showers with a chance of tstms after midnight.

Sun

SW winds 5 to 10 kt. Seas 1 to 2 ft. Wave detail: SE 2 ft at 5 seconds. Showers in the morning, then showers likely with a chance of tstms in the afternoon.

Sun Night

W winds 5 to 10 kt. Seas 1 to 2 ft. A chance of showers and tstms in the evening.

Mon

N winds 5 to 10 kt. Seas 1 to 2 ft.

Mon Night

NE winds 10 to 15 kt. Seas 1 to 2 ft.

Tue

E winds around 10 kt, becoming SE in the afternoon. Seas 1 to 2 ft.

Tue Night

S winds 5 to 10 kt. Seas around 2 ft in the evening, then 1 foot or less.

winds and seas higher in and near tstms.

Winds and seas higher in and near tstms.