Charleston Weather Blog

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

Memorial Day Weekend: Starting quiet and seasonable, but turning stormy

/ May 23, 2025 at 7:37 PM

Memorial Day Weekend will get off to a benign start, but a stalling front in our neck of the woods will turn things unsettled beginning Sunday.

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Friday & Memorial Day Weekend: Seasonable temperatures to start, but warming and storming resume Sunday

/ May 22, 2025 at 6:22 PM

Generally quiet weather featuring plenty of sunshine and seasonable temperatures will bring us into Memorial Day Weekend as high pressure builds in at the surface for a couple days. Friday will start in the low-to-mid-60s and warm to the mid-80s in the afternoon with low humidity. It’ll still be a bit breezy, but not to the extent as we saw on Thursday.

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Thursday: Front takes the edge off the heat

/ May 21, 2025 at 10:47 PM

A reprieve from the early-season stretch of 90° temperatures commences Thursday in the wake of a cold front. We’ll start the day noticeably cooler and drier than previous days, with lows bottoming out in the mid-60s as opposed to the low 70s. Highs will still run a little warmer than normal, but upper 80s will still represent cooler highs, especially on the heels of highs in the low 90s the past few days. Despite the warmer-than-normal temperatures, the lower dewpoints in the mid-50s will send relative humidity values down to around 30% or so during the day, so at least any sweat will have a chance to do its thing to cool you off.

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Rest of the work week: A few storms possible Wednesday, then drying out and turning a little cooler

/ May 20, 2025 at 9:45 PM

The unseasonable warmth of the past week and change will draw to a close on Wednesday as a cold front approaches the area. We’ll start Wednesday in the mid-70s, warming to the mid-90s in the afternoon. There’s a chance for a storm or two ahead of the front, but it’s conceivable that many of us may not see any rain at all with this frontal passage. If a storm or two can get going, it could turn strong to severe, but the chances are very low.

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