Dangerous Heat Wave Continues; Areas of Severe Thunderstorms Today

Dangerous, record-breaking heat will continue across most of the central and eastern U.S through Friday then focusing on the eastern U.S. through the Independence Day weekend. Peak heat indices of up to 115 degrees are possible. Strong to severe thunderstorms will be possible from the northern Plains into the Midwest and Great Lakes regions, as well as across the southern Appalachians today. Read More >

For More Weather Information:

Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Tonight
SE 10kt⇓
< 1ft
Friday
⇑SE 10kt
< 1ft
Friday Night
SSE 7kt⇓
< 1ft
Independence Day
⇑SSE 10kt
< 1ft
Saturday Night
SSW 9kt
< 1ft
Sunday
⇑S 12kt
< 1ft
Sunday Night
SSW 10kt
< 1ft
Monday
⇑SSW 13kt
< 1ft
Monday Night
SSW 12kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:30 pm EDT Jul 2, 2026
Forecast Valid: 5pm EDT Jul 2, 2026-6pm EDT Jul 9, 2026

View Nearby Observations

Detailed Forecast

Tonight

SE wind 5 to 10 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.

Friday

Variable winds less than 5 kt becoming SE 5 to 10 kt in the afternoon. Sunny. Seas 1 ft or less.

Friday Night

SSE wind 5 to 7 kt becoming variable and less than 5 kt in the evening. Mostly clear. Seas 1 ft or less.

Independence Day

Variable winds less than 5 kt becoming SSE 5 to 10 kt in the afternoon. Sunny. Seas 1 ft or less.

Saturday Night

SSW wind 5 to 9 kt. Mostly clear. Seas 1 ft or less.

Sunday

Variable winds less than 5 kt becoming S 7 to 12 kt in the afternoon. Sunny. Seas 1 ft or less.

Sunday Night

SSW wind 8 to 10 kt. Mostly clear. Seas 1 ft or less.

Monday

SSW wind 7 to 10 kt increasing to 10 to 13 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

Monday Night

SSW wind 9 to 12 kt. A slight chance of showers and thunderstorms. Seas 1 ft or less.

Winds and waves higher in and near tstms. Unless otherwise noted, waves 1 foot or less. Charleston Harbor water temperature 87 degrees.

*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.