Charleston Weather Blog

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

Tuesday: Mostly cloudy and a bit on the cool side for mid-May

/ May 11, 2026 at 9:48 PM

High pressure nudging in from the north will keep cloud cover in place and cool us off a bit for Tuesday after the third 90° day of the year on Monday. We’ll start the day in the upper 50s, warming to about the mid-70s given the expected cloud cover. A shower could get close to far southern Charleston County during the day, but most of us should stay rain-free.

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The week ahead: Unsettled to start, but summer-ish this weekend

/ May 10, 2026 at 10:19 PM

I hope all of you out there who celebrated Mother’s Day today had a wonderful day. It ended up being a pretty good weekend weather-wise, with much of the moisture staying suppressed to the south. Monday, however, will bring more substantial rain chances as a cold front pushes south and eastward. We should stay quiet through the morning, though by early afternoon we should start to see showers and a few thunderstorms develop, first along the seabreeze and then becoming more widespread as the front moves by later in the day into the evening. There’s a risk for one or two thunderstorms to become severe, with damaging wind gusts the main concern, though widespread severe weather is not expected. We could see some brief periods of heavy rain, but with relatively quick storm motions expected, they won’t be hanging around long enough to cause any flooding issues. Temperatures will run on the warm side of normal for mid-May, with highs potentially reaching the upper 80s before thunderstorms kick in.

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Weekend forecast: Turning unsettled again, but it won’t rain all the time

/ May 8, 2026 at 8:32 PM

Showers and a few thunderstorms return to the weather picture this weekend as disturbances aloft ripple across the area. The good news is that it won’t rain all the time and that whatever rain we will get will help with the ongoing severe drought.

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Friday & the weekend: A quiet Friday, then turning unsettled again

/ May 7, 2026 at 10:05 PM

We’re back in the saddle here at @chswx HQ and looking at a quiet Friday before conditions turn unsettled once again this weekend as the front that’s helped to bring us today’s rain starts to wobble back northward.

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