Charleston Weather Blog

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

Weekend forecast: A bit stormy at times Saturday, less so Sunday

/ August 15, 2025 at 9:58 PM

More storms are in the offing for Saturday as a front slides southward across the area, eventually stalling out across Georgia. This front, though, brings us a slightly cooler and drier airmass that filters into the area starting Sunday.

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Friday & the weekend: An unsettled couple days ahead of a more traditional summertime pattern

/ August 14, 2025 at 10:19 PM

Another hot day is ahead Friday as heat indices once again climb well into the 100s under partly cloudy skies before thunderstorms develop along and ahead of the seabreeze in the afternoon. These will be generally scattered in nature — not everyone will see a storm, but those who do could get a quick round of heavy rain and gusty winds along with a good bit of lightning.

Better storm chances arrive on Saturday as a front sags south and eventually falls apart. Many of us should see a storm on Saturday, particularly in the afternoon, with plenty of triggers available for thunderstorm development. This should also help keep temperatures pinned to around 90° — still hot, but not as hot.

Lower dewpoints move in with northeast flow behind the front, giving us a little less humidity to deal with and slightly cooler temperatures as well. Ridging aloft will persist, allowing highs to get to around 90°, while a few showers and thunderstorms will be possible on the seabreeze each afternoon. We’ll keep this going into next week, too.

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