Charleston Weather Blog

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

Thursday: Mostly sunny, but a bit smoky

/ April 22, 2026 at 10:12 PM

High pressure will remain in control on Thursday, keeping mostly sunny skies in place. It won’t be all sunshine, though, as smoke from nearby wildfires in Georgia drifts into the area, which could have negative impacts on air quality. An Air Quality Alert is in effect for the Lowcountry through Thursday evening as a result; people who have sensitivities to poor air quality should limit time outdoors. Temperatures will take another step up as southwesterly winds help pump in warmer air; expect lows in the mid-50s to warm to the mid-to-upper 80s in the afternoon.

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Rest of the work week: 80s return

/ April 21, 2026 at 8:23 PM

High temperatures return to the 80s on Wednesday as high pressure begins to move out into the Atlantic. This is the continuation of a warming trend that will last into the weekend, which will feature temperatures returning to the mid-to-upper 80s ahead of a front that will bring the first decent chance of rain in a couple weeks.

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Tuesday: Another pleasant day

/ April 20, 2026 at 10:43 PM

High pressure remains in control for Tuesday (and for the next few days), yielding plenty of sunshine and comfortably warm temperatures. We start the day in the low 50s and will head to the mid-to-upper 70s in the afternoon away from the locally cooler coastline. Overall, it should be a nice day to get out and about if you are able.

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The week ahead: A cool start, but warming back up

/ April 19, 2026 at 10:06 PM

Dry weather continues for the next few days, but we may start to see the pattern begin to flip this weekend to something a little wetter to close out April.

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Weekend forecast: Hot Saturday, turning slightly cooler on Sunday

/ April 17, 2026 at 9:31 PM

After tying a record high on Friday, we’ll make another run at one on Saturday before a cold front ushers in some changes starting Sunday.

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Friday & the weekend: Record highs possible, but changes coming

/ April 16, 2026 at 11:14 PM

We’ll see the potential for record heat Friday and Saturday before a front affects the area Sunday, ushering in a few cooler days next week.

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