Charleston Weather Blog

Forecast explanations, atmospheric science, and other cool weather-related stuff for Charleston, SC

Friday & the weekend: Stalling front turns things unsettled

/ September 10, 2026 at 10:33 PM

A cold front will stall out to our north, keeping warm and muggy conditions in place with disturbances bringing about showers and thunderstorms each day, especially Saturday.

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Thursday: Warmth continues with afternoon storms

/ September 9, 2026 at 9:06 PM

Late-summer heat and humidity continues to build as temperatures look to return to the 90s for Thursday after a balmy start in the mid-70s. We should see a bit more in the way of afternoon showers and thunderstorms on the seabreeze with high pressure beginning to weaken, though not everyone will see rain, either. A few pockets of heavy rain will be possible with moderate instability and precipitable water values (generally the amount of water you could wring out of a column of air) a little over 2″.

There may be one more round of salt water flooding with Thursday evening’s high tide around 8:18 PM, but it’ll be on the minor side with water levels peaking in the 7-7.2′ range. Rain shouldn’t be an issue as the seabreeze will be well inland by that point, though. From here, we should see diminishing astronomical influences and less of a chance for coastal flooding, though there remains an outside shot on Friday coincident with the full moon.

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Rest of the work week: Gradually warming back to the 90s, afternoon storms

/ September 7, 2026 at 10:27 PM

The abbreviated work week will feature gradually warming temperatures and chances for showers and thunderstorms each afternoon. We’ll also need to monitor the evening high tides for the potential for minor to moderate coastal flooding with the upcoming full moon.

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