Charleston Weather Blog

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

The week ahead: Hot start with on and off storms

/ August 6, 2023 at 9:25 PM

The week ahead gets off to a hot start as westerly winds keep the seabreeze close to the coast for much of the day, driving highs into the mid-to-upper 90s on Monday afternoon. Mix in low-70s dewpoints and heat indices will peak above 105° in the afternoon. From there, a thunderstorm complex will approach the area from the northwest, but it should get here toward the evening and be in a weakening phase as a result. A strong wind gust or two can’t be ruled out, though, especially the further inland you are.

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Weekend forecast: A fairly typical first weekend of August

/ at 9:19 PM

Pretty standard early-August fare is in order for the weekend (weather-wise, anyway). Expect to start Saturday in the mid-70s under partly cloudy skies, with highs heading into the low 90s in the afternoon. Isolated to scattered showers and thunderstorms will be possible, though it’s worth noting that Friday afternoon’s high-resolution models keep coverage pretty sparse across the Tri-County. It’s conceivable that some folks may not see a drop of rain — altogether not the worst thing after a fairly wet Friday.

Expect more of the same on Sunday with temperatures heading a couple degrees warmer than Saturday as a nearby front washes out. Heat indices will push 100° in the afternoon with another chance of a few afternoon and evening thunderstorms. Like Saturday, widespread rain is currently not anticipated — just be ready to bring outdoor activities inside in case thunderstorms approach.