Dangerous Heat to Continue through the Holiday Weekend; Severe Storms on Friday from the Plains to the Mid-Atlantic

Dangerous, record-breaking heat will continue across most of the central and eastern U.S through Friday then focusing across the eastern U.S. through the Independence Day holiday weekend. Peak heat indices of up to 115 degrees are possible. Isolated to scattered severe thunderstorms are possible from the northern/central Plains into the Midwest, Ohio Valley, and Mid-Atlantic Friday. Read More >

For More Weather Information:

Charleston, SC Local Forecast Office

Charleston Harbor MR

Marine Point Forecast

[NOTICE]

Today
⇑SE 10kt
< 1ft
Tonight
SSE 7kt⇓
< 1ft
Independence Day
⇑SSE 11kt
< 1ft
Saturday Night
SSW 9kt
< 1ft
Sunday
⇑S 13kt
< 1ft
Sunday Night
SSW 11kt
< 1ft
Monday
⇑SSW 14kt
< 1ft
Monday Night
SSW 12kt
< 1ft
Tuesday
⇑SSW 14kt
< 1ft

Associated Zone Forecast which includes this point

Last Update: 2:45 am EDT Jul 3, 2026
Forecast Valid: 6am EDT Jul 3, 2026-6pm EDT Jul 9, 2026

View Nearby Observations

Detailed Forecast

Today

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

Tonight

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 6 to 11 kt in the afternoon. Sunny. Seas 1 ft or less.

Saturday Night

SSW wind 6 to 9 kt. Mostly clear. Seas 1 ft or less.

Sunday

Variable winds less than 5 kt becoming S 8 to 13 kt in the morning. Sunny. Seas 1 ft or less.

Sunday Night

SSW wind 9 to 11 kt. A slight chance of showers and thunderstorms after 2am. Seas 1 ft or less.

Monday

SSW wind 7 to 10 kt increasing to 11 to 14 kt in the afternoon. A slight chance of showers and thunderstorms before 8am, then a slight chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Monday Night

SSW wind 10 to 12 kt. A chance of showers and thunderstorms, mainly between 8pm and 2am. Seas 1 ft or less.

Tuesday

SSW wind 8 to 11 kt increasing to 11 to 14 kt in the afternoon. A slight chance of showers and thunderstorms before 8am, then a slight chance of showers and thunderstorms after 2pm. 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 86 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.