Charleston Weather Blog

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

Weekend forecast: Unsettled weather returns

/ July 31, 2026 at 11:20 PM

High pressure will give way to a cold front approaching from the west, bringing more humid air and shower and thunderstorm chances back to the forecast for the weekend.

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Friday & the weekend: Humidity and storms return

/ July 30, 2026 at 10:04 PM

A brief interlude in midsummer humidity comes to a close as a stalled front that’s been hanging just south of the area lifts back northward on Friday. A stronger front approaches over the weekend, with deeper moisture and more widespread storms possible Sunday.

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Thursday: Still warm, but not quite as humid

/ at 9:18 PM

What looks to be a top-five-warmest July on record will close on a slightly cooler and drier note as high pressure nudges in from the north. Thursday starts in the mid-70s across the area, warming to the low-to-mid-90s in the afternoon with plenty of sunshine. As mentioned, the drier air will keep heat indices a little more in check, though they may still get close to 100° near the coast where the more humid maritime airmass resides. But with all that in mind, it’ll still feel better outside than it did at the start of the week.

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Rest of the work week: Heat advisory Wednesday, then turning less humid

/ July 28, 2026 at 7:19 PM

Another hot and humid day awaits for Wednesday, then a bit of drier air filters in to take the edge off the heat ever so slightly to close out the work week and the month of July.

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