Charleston Weather Blog

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

Weekend forecast: Heat continues with afternoon thunderstorms

/ June 12, 2026 at 11:52 PM

Heat, humidity, and chances for afternoon thunderstorms continue into the weekend, with the potential for not only record high temperatures but also record warm low temperatures each day.

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Thursday: Getting warmer — and there’s more where that came from

/ June 10, 2026 at 11:09 PM

High pressure remains in control across the area, limiting afternoon thunderstorms and allowing heat to continue to build on Thursday. We’ll start in the mid-70s, warming to the mid-90s in the afternoon. Mix in dewpoints in the low-to-mid-70s and that will yield heat indices approaching or even slightly exceeding 100°. And while a brief popup sbower is never fully out of the question this time of year, the vast majority of us will stay rain-free.

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Rest of the work week: Turning up the heat

/ June 9, 2026 at 11:20 PM

Heat and humidity will continue to build as we head down the home stretch of the work week. We’ll also start to see an uptick in shower and thunderstorm chances as well, which should bring at least a little relief.

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