Charleston Weather Blog

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

Friday & the weekend: Dangerous heat wave begins

/ July 24, 2025 at 8:39 PM

Anomalously strong high pressure builds in aloft starting Friday, bringing about the hottest weather of the year. We’ll challenge record high temperatures as well as record warm low temperatures, with heat advisories and even Extreme Heat Warnings a likelihood.

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Thursday: Scattered storms possible, but taper off ahead of a hot weekend

/ July 23, 2025 at 8:54 PM

The stationary front that’s been lingering nearby will begin to fall apart on Thursday as high pressure begins to build in, bringing storm chances down and temperatures up especially as we head into the weekend, which looks particularly hot.

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Rest of the work week: A couple more unsettled days before late-July heat returns

/ July 22, 2025 at 10:49 PM

The stalled front that brought us some flooding rains and severe weather on Tuesday lingers over the next couple days before high pressure nudges in, sending rain chances down and temperatures up for Friday.

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Tuesday: Thunderstorms developing this afternoon, with heavy rain and flooding possible

/ at 8:14 AM

Thunderstorms will feature prominently in today’s forecast as the seabreeze pushes inland and a front drops in from the north.

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The week ahead: Searing hot start, but turning more unsettled

/ July 20, 2025 at 8:14 PM

This weekend’s hot weather continues into Monday, but a more unsettled pattern will cool temperatures down back to normal (still not chilly, but not overwhelmingly hot, either) as rain chances tick back up.

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