Charleston Weather Blog

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

Rest of the work week: Heat continues, but with showers and storms for relief, too

/ July 29, 2025 at 9:11 PM

Our late-July heat wave continues for the rest of the work week, but thankfully with some afternoon and evening thunderstorms to help take the edge off a bit.

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Tuesday: Still hot, but better afternoon storm chances

/ July 28, 2025 at 7:34 PM

The heat wave continues on Tuesday, but we will be getting past its peak as the high pressure ridge aloft continues to migrate westward, allowing for more shower and thunderstorm activity to develop in the afternoon. We’ll still be hot enough for a Heat Advisory, with low temperatures in the upper 70s to low 80s yielding to highs in the mid-90s. Mix in mid-to-upper-70s dewpoints and you get heat indices topping out around 110° or so before showers and thunderstorms develop. Guidance generally keeps things dry through about 1-2 PM before numerous storms kick off generally away from the coast. Widespread severe weather isn’t expected, but a couple storms could produce some strong winds, and there will be a risk for flooding if storms train. Remember, every thunderstorm is dangerous because of the lightning it produces, so be sure to head indoors if a storm threatens your area.

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