Fort Sumter, SC Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Mon
Aug 3 		Thunderstorms
Close Hourly 		-º / 75º 100% SSW 6 mph 97%
9pm Thunderstorms 76º 93% S 5 mph 99%
10pm Thunderstorms 77º 68% S 6 mph 97%
11pm Cloudy 78º 19% S 7 mph 97%
Tue
Aug 4 		Isolated Thunderstorms
View Hourly 		87º / 79º 34% SSW 11 mph 82%
12am Cloudy 79º 14% SSW 7 mph 94%
1am Cloudy 79º 14% SSW 6 mph 93%
2am Cloudy 78º 16% SSW 6 mph 94%
3am Scattered Thunderstorms 78º 41% SSW 5 mph 95%
4am Scattered Thunderstorms 77º 58% SSW 3 mph 97%
5am Scattered Thunderstorms 76º 46% SW 2 mph 99%
6am Scattered Thunderstorms 76º 36% WSW 1 mph 100%
7am Isolated Thunderstorms 76º 34% W 0 mph 98%
8am Few Showers 78º 34% W 1 mph 97%
9am Mostly Cloudy 80º 24% WSW 2 mph 93%
10am Mostly Cloudy 82º 21% SSW 1 mph 87%
11am Partly Cloudy 84º 12% S 3 mph 81%
12pm Mostly Cloudy 86º 9% SSE 4 mph 76%
1pm Mostly Cloudy 87º 9% SSE 7 mph 73%
2pm Mostly Cloudy 86º 15% SSE 9 mph 74%
3pm Mostly Cloudy 87º 15% SSE 9 mph 73%
4pm Partly Cloudy 86º 15% SSE 11 mph 75%
5pm Partly Cloudy 85º 15% S 11 mph 77%
6pm Mostly Cloudy 85º 15% S 11 mph 78%
7pm Partly Cloudy 84º 12% S 11 mph 80%
8pm Partly Cloudy 82º 11% S 9 mph 84%
9pm Partly Cloudy 82º 15% S 7 mph 86%
10pm Partly Cloudy 81º 13% S 6 mph 87%
11pm Partly Cloudy 81º 8% S 6 mph 87%
Wed
Aug 5 		AM Thunderstorms
View Hourly 		87º / 79º 70% S 11 mph 82%
12am Partly Cloudy 81º 17% S 6 mph 87%
1am Showers 81º 44% S 6 mph 87%
2am Showers 81º 50% S 6 mph 88%
3am Showers 81º 44% S 5 mph 88%
4am Showers 80º 37% S 5 mph 90%
5am Isolated Thunderstorms 80º 33% S 3 mph 90%
6am Mostly Cloudy 80º 24% S 3 mph 90%
7am Isolated Thunderstorms 80º 34% S 3 mph 91%
8am Scattered Thunderstorms 81º 43% S 3 mph 90%
9am Thunderstorms 82º 71% S 4 mph 88%
10am Scattered Thunderstorms 83º 55% SSW 5 mph 84%
11am Scattered Thunderstorms 84º 58% S 7 mph 81%
12pm Scattered Thunderstorms 84º 45% S 8 mph 79%
1pm Isolated Thunderstorms 86º 34% S 9 mph 77%
2pm Cloudy 85º 13% S 10 mph 78%
3pm Mostly Cloudy 86º 13% S 11 mph 77%
4pm Cloudy 86º 9% SSE 11 mph 76%
5pm Mostly Cloudy 85º 9% S 10 mph 79%
6pm Mostly Cloudy 85º 9% SSE 10 mph 80%
7pm Partly Cloudy 84º 6% SSE 10 mph 81%
8pm Partly Cloudy 83º 5% SSE 8 mph 84%
Thu
Aug 6 		AM Thunderstorms 88º / 78º 57% SSE 9 mph 80%
Fri
Aug 7 		AM Thunderstorms 90º / 78º 42% ESE 10 mph 77%
Sat
Aug 8 		Thunderstorms 86º / 78º 77% ESE 9 mph 80%
Sun
Aug 9 		AM Thunderstorms 88º / 78º 50% S 8 mph 80%
Mon
Aug 10 		Scattered Thunderstorms 89º / 78º 50% SSW 10 mph 79%

Weather Radar for Fort Sumter, SC See Radar

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* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Fort Sumter, SC

Tonight
Low : 79ºF
SSW wind 10 to 13 kt. Showers and thunderstorms before 4am, then showers and possibly a thunderstorm, mainly after 4am. Seas around 3 ft.
Tuesday
High : 83ºF
WSW wind 6 to 9 kt becoming S 9 to 12 kt in the afternoon. Showers and thunderstorms likely, mainly before noon. Seas around 2 ft.
Tuesday Night
Low : 80ºF
S wind 10 to 12 kt. A chance of showers and thunderstorms between 1am and 4am, then showers likely and possibly a thunderstorm after 4am. Seas around 3 ft.
Wednesday
High : 84ºF
S wind 8 to 12 kt. Showers likely and possibly a thunderstorm before 7am, then a chance of showers and thunderstorms between 7am and 2pm. Seas around 2 ft.
Wednesday Night
Low : 81ºF
S wind around 11 kt. A chance of showers and thunderstorms, mainly after 2am. Seas 2 to 3 ft.
Thursday
High : 84ºF
S wind 6 to 11 kt. A chance of showers and thunderstorms before 8am, then showers likely and possibly a thunderstorm between 8am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Seas around 2 ft.
Thursday Night
Low : 81ºF
SSE wind 7 to 9 kt. A slight chance of showers and thunderstorms before 8pm. Seas around 2 ft.
Friday
High : 84ºF
ESE wind 5 to 8 kt increasing to 8 to 11 kt in the afternoon. A chance of showers and thunderstorms, mainly before 2pm. Seas around 2 ft.
Friday Night
Low : 79ºF
SE wind 7 to 9 kt. A chance of showers and thunderstorms, mainly after 2am. Seas around 3 ft.

NOAA Buoy Data Near Fort Sumter, SC See Map

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    Wind Speed Forecast for Fort Sumter, SC

    TuesdayWednesday
    Wind Speed (MPH) 56227117634910
    1am5am9am1pm5pm9pm1am5am9am1pm5pm9pm
    MPH 56227117634910
    DIR SSSWSWWSWSSESSSSSSS

    Current Weather Conditions In Fort Sumter, SC

    As Of: 10 minutes ago

    • 76ºF
    • 76ºF
    • 5mph
    • 0º (S)
    • 5mph
    • Thunderstorms
    • 6mi
    • 29.88"
    • 99%
    • 0ºF

    The weather right now in Fort Sumter, SC is Thunderstorms. The current temperature is 76°F, and the expected high and low for today, Monday, August 3, 2026, are -° high temperature and 75°F low temperature. The wind is currently blowing at 5 miles per hour, and coming from the South. The wind is gusting to 5 mph. With the wind and the atmosphere the temperature feels like 76° Fahrenheit. Expected precipitation is 93 percent, with current humidity at 99 percent, and air pressure at 29.88 in. Visibility is 6 nautical miles. There are no current weather alert(s).