Charleston Weather Blog

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

Weekend forecast: Generally nice, but changes are on the way

/ October 24, 2025 at 7:01 PM

Generally speaking, we can expect good weather this weekend (especially on Saturday) with a wedge of high pressure building southward through the Carolinas into Georgia. This will lead to breezier conditions for the weekend as northeasterly winds kick up, and temperatures will run a couple clicks lower with cooler air moving in at the surface. Moisture will also start to overrun the wedge, and that will bring a gradual increase in dewpoints and cloud cover as low pressure develops in the Gulf. This low pressure system may bring us some showers later Sunday, and look to make for a soggy Monday.

Saturday’s lows will once again begin in the upper 40s (with some mid-40s inland), warming to the low 70s in the afternoon under partly cloudy skies. Cloud cover will continue to thicken on Sunday as moisture return continues; this will lead to a warmer start in the mid-50s before highs peak around 70-71° once again under mostly cloudy skies. Showers and maybe even some rumbles of thunder will be possible beginning Sunday evening, so keep that in mind as you make your weekend plans.

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Friday & the weekend: Seasonable conditions continue

/ October 23, 2025 at 6:46 PM

Expect generally quiet weather and seasonably cool temperatures to continue for Friday and the weekend. Dry high pressure remains in control for Friday with temperatures cooling to the upper 40s by morning, warming to the low-to-mid-70s in the afternoon with just a few clouds. High pressure then begins to wedge into the area over the weekend, bringing with it slightly cooler temperatures for Saturday. Moisture return ahead of the next storm system starts to kick in on Sunday, with dewpoints rising throughout the day contributing to a bit more in the way of cloud cover ahead of what looks to be an unsettled first half of the work week next week as low pressure heads up the coast.

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Tuesday: Another picture-perfect day

/ October 20, 2025 at 6:36 PM

No complaints in the weather department for Tuesday as high pressure remains the main weather driver with deep-layer dry air in place across the region. Temperatures start on the cool side once again, with lows bottoming out in the low 50s (with perhaps a few readings in the upper 40s in more rural and sheltered areas). We’ll warm to the mid-to-upper 70s under predominantly sunny skies in advance of a dry front that comes through early Wednesday morning.

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The week ahead: Quiet and seasonable weather continues

/ October 19, 2025 at 10:49 PM

Another generally quiet week of weather lies ahead as high pressure remains the primary weather driver across the Southeast with a reinforcing shot of cooler air for the second half of the week.

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Friday & the weekend: Comfortable and quiet while trending warmer

/ October 16, 2025 at 5:33 PM

High pressure remains the main weather player in our neck of the woods, keeping things generally quiet and seasonable for Friday and the weekend. You may need a light hoodie or somesuch Friday morning as lows bottom out to the low 50s in the metro and perhaps into the 40s further inland and in more rural locations. Highs Friday peak in the low 70s with plenty of sunshine expected.

High pressure starts to move a bit more overhead Saturday and then starts to slip offshore on Sunday. This will lead to gradually warming temperatures through the weekend; mid-70s Saturday while we should touch 80° on Sunday. Generally speaking, mostly sunny skies will prevail, though there could be an uptick in cloud cover later Sunday as a front approaches. A stray shower will be possible overnight Sunday into early Monday morning, but otherwise, we look to stay dry well into next week.

Thursday: Another gorgeous day

/ October 15, 2025 at 7:00 PM

Mother Nature’s apology for the nor’easter continues Thursday with another day of comfortable temperatures and plenty of sunshine expected. A weak, dry front moves by early in the day, and so we should see temperatures start and peak a little cooler than we did on Wednesday. Expect lows in the mid-to-upper 50s warming to the mid-70s under mostly sunny skies. Winds will swing around to the northeast and pick up a little bit, and this could drive some minor coastal flooding with the early evening high tide cycle. A Coastal Flood Advisory is possible, but impacts beyond the most vulnerable locations downtown will be minimal.

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Rest of the work week: Pleasant fall weather continues

/ October 14, 2025 at 9:36 PM

Pleasant weather continues for the rest of the work week as high pressure remains in control. A dry front will move through overnight Wednesday into early Thursday, bringing along a reinforcing shot of cooler and drier air that will make for a crisp start on Friday.

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The week ahead: Much more sun and pleasant temperatures

/ October 12, 2025 at 10:07 PM

The nor’easter that has made for several soggy days across the metro will finally be pulling away on Monday, yielding a beautiful week of weather across the area with plenty of sun and comfortable temperatures.

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