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Author: Jared Smith

Jared Smith founded @chswx on Twitter in 2008 as an experiment in disseminating weather data through social media. In the ensuing decade-and-a-half, @chswx has provided live coverage of tropical cyclones, tornadoes, severe weather, and even a couple bouts of winter weather to the good people of Charleston, SC.

Thursday: One more day of lower humidity and sunny skies

/ September 3, 2025 at 8:06 PM

We’ll start to turn a little warmer on Thursday as high pressure to the northeast breaks down a bit, but we should still get one more good day of low humidity in before we start to see dewpoints begin to climb back toward 70° starting Friday. Temperatures on Thursday start quite comfortably once again, with mid-60s the general rule across much of the area. We’ll warm to the upper 80s on Thursday afternoon with plenty of sunshine. The only fly in the ointment may be some very minor coastal flooding around the 6:19 PM high tide, with water levels currently forecast just below 7′. If water levels trend a little higher, a Coastal Flood Advisory may be issued. Otherwise, though, it’ll be another really nice early September day in the Lowcountry.

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Rest of the work week: Staying mostly quiet with gradually warming temperatures

/ September 2, 2025 at 8:00 PM

The rest of the work week will remain generally quiet (weather-wise, anyway), as high pressure remains in control at the surface. Temperatures will be on a warming trend as we get over the hump and into the second half of the work week as the mid-level trough that’s kept us on the cool side flattens out and retreats a bit north. We’ll also start to see high pressure build back in from the Atlantic for a few days, which turns the flow at the surface more southerly and starts to bring that more warm and humid air back to the area. We’re in the mid-80s Wednesday, upper 80s Thursday, and likely back to around 90° on Friday, with lows steadily climbing with the dewpoints back to around 70° by Friday morning. However, we look to stay rain-free through about Saturday before another front approaches for late weekend/early next week.

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Rest of the work week: Warming trend commences

/ September 1, 2025 at 7:20 PM

Mostly quiet weather is expected for the rest of the work week, with a warming trend taking us from the fall-like Labor Day weekend back to something a little more resembling summer by the end of the week, with highs back in the 90s by Friday.

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Beautiful but breezy Labor Day ahead

/ at 7:55 AM

High pressure wedging into the area from the north will make for a beautiful Labor Day and start to climatological fall. Temperatures are starting in the low to mid-60s for the first time since early June, and we’ll warm to the low to mid-80s in the afternoon under mostly sunny skies with an elevated northeasterly breeze keeping things on the cool side.

If the beaches are in your plans, it’ll be noticeably windier there — gusts 25-30 MPH will be possible — and there is a high risk of rip currents today as a result. Today just won’t be a good day to get into the ocean as it could turn dangerous in a hurry. However, the refreshing dry air and comfortable warmth will certainly help make up for it!

Friday & Labor Day weekend: Cooler-than-normal temperatures persist with an uptick in storm chances

/ August 28, 2025 at 8:32 PM

Friday is looking a little warmer but should remain rain-free as high pressure remains the main weather driver for at least one more day. Temperatures start in the upper 60s, warming to the mid-to-upper 80s in the afternoon under partly cloudy skies. An uptick in cloud cover and maybe a stray shower or two could accompany the seabreeze in the afternoon, but guidance keeps the majority of the area dry.

Shower and thunderstorm chances kick up a little bit for the weekend, though the trend has been a bit drier overall as high pressure to the north keeps the better rain chances further south. Still, waves of low pressure should at least kick up scattered coverage across the area especially in the afternoons, but it doesn’t look like a washout, and it will be a far, far cry from last weekend’s deluge. Temperatures will continue to run below normal; expect highs in the mid-80s each afternoon after starting each day in the upper 60s. It won’t feel much like summer as we unofficially bring it to a close, but it should still at least feel fairly pleasant when storms aren’t around.

Thursday: Another comfortable day, a few more clouds

/ August 27, 2025 at 9:59 PM

Another nice day lies ahead on Thursday, with a nice start in the upper 60s warming to the mid-80s in the afternoon. We should see a little uptick in cloud cover with a little higher-dewpoint air infiltrating in, but the forecast is largely rain-free. So, it’ll be another nice day to get out and about if you’ve got some time.

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Rest of the work week: A beautiful Wednesday before shower and storm chances re-enter the picture

/ August 26, 2025 at 9:11 PM

Cooler and drier air will continue to push into the area overnight into Wednesday, yielding a well-deserved beautiful day across the Lowcountry with comfortable warmth and few clouds. We start the day in the mid-to-upper 60s, warming to the mid-80s in the afternoon. Dewpoints mixing down to the low 60s — and perhaps as low as the upper 50s — will feel quite good!

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Tuesday: Dewpoints drop further

/ August 25, 2025 at 9:24 PM

Dewpoints will continue to fall on Tuesday as drier air filters into the area, making for a comfortably warm day with plenty of sunshine to be had. We start the day in the low 70s, warming to the mid-to-upper 80s in the afternoon with just some fair weather cloud cover to be had. All in all, a welcomed nice day after yet another deluge in Mt. Pleasant on Monday.

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The week ahead: Drier, then cooler

/ August 24, 2025 at 9:09 PM

The main weather story this week will be much more pleasant than last week’s: cooler, drier air working into the area will bring along a decent early-fall preview to close out August, though a few storms will be possible heading into late week.

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Weekend forecast: More heavy rain appears likely

/ August 22, 2025 at 8:46 PM

After record-breaking rainfall on Friday, more heavy rain appears likely for Saturday and to a lesser extent on Sunday as waves of low pressure along a stalled front continue to traverse the area, which has been well-moistened by an influx of tropical air.

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