Charleston Weather Blog

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

Friday & the weekend: Warming up, with a showery and windy Sunday ahead

/ December 7, 2023 at 6:10 PM

Another round of chilly weather is expected overnight Thursday into Friday. We’ll wake up to temperatures in the upper 30s Friday morning, but high pressure slipping offshore will allow temperatures to warm up to the mid-60s in the afternoon under a mix of sun and clouds. Overall, Friday looks pretty good.

The warming trend continues into the weekend. Saturday is the pick day of the weekend for outdoor activities, and it really isn’t close as a front gets through Sunday. It starts significantly warmer than Friday did, with lows in the low to mid-50s expected. Highs will top out in the mid-70s under generally partly cloudy skies. This will be the last warm and quiet weather day for at least a few days, so try to take advantage!

The weather changes fairly quickly overnight Saturday into Sunday as a strong storm system’s cold front drives toward the area. Sunday gets off to another unseasonably warm start, with lows in the low 60s expected. Showers may be firing off first thing Sunday, but the main band of rain associated with the front looks to arrive later in the afternoon and evening. Wind will be another factor, with gusts upwards of 30 MPH appearing possible at times, even outside of storms. The risk for severe weather is quite low, owing to the minimal available instability that’s expected despite no shortage of bulk wind shear. Still, some thunder is possible, and if additional instability can kick up, a strong to damaging wind gust or two is not out of the question. More fine-tuning of the forecast will occur, but generally speaking, Sunday just doesn’t look promising to be outside.

Frosty start Thursday; warming begins Friday

/ December 6, 2023 at 7:14 PM

Thursday will represent the bottom-most point of this week’s temperatures rollercoaster, with lows bottoming out in the mid-30s across much of the metro with freezing temperatures further inland. Frost is a distinct possibility, and you’ll want to have pets and plants inside overnight Wednesday. Cool high pressure moves across the area during the day Thursday, limiting highs to the upper 50s to around 60° despite predominantly sunny skies.

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Rest of the work week: Chilly couple days, then turning warmer Friday

/ December 5, 2023 at 8:09 PM

Another cool couple days lie ahead as a reinforcing front comes through early Wednesday morning. This will be a pretty solid shot of cool and dry air as high pressure builds in from the west. We’ll start Wednesday in the mid-40s, but the cooler air rushing in will limit the high to around 60° in the afternoon despite primarily sunny skies. It’ll be a bit breezy, with gusty winds out of the northwest at times, so some element of wind-breaking may be ideal.

Thursday will be the coolest day of the week. We’ll start the day in the mid-30s, with inland locations possibly approaching freezing. A light wind will make it feel a little cooler, with wind chills in the low 30s across the metro. Skies will once again be predominantly cloud-free, but the cold high pressure settling in will hold highs to the upper 50s to around 60°.

High pressure slips offshore Friday, and this allows some warmer air to move back in. We start Friday in the upper 30s to around 40°, but temperatures will warm back toward the mid-60s in the afternoon. Clouds will also be increasing as a coastal trough begins to take shape nearby, but rain is not expected.

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Tuesday: Turning cooler

/ December 4, 2023 at 7:54 PM

A reinforcing shot of cool air arrives overnight, and by Tuesday morning, we’ll wake up to temperatures about 10-15° cooler than we woke up to on Monday. Expect to start the day in the mid-40s before warming to the mid-60s in the afternoon under partly cloudy to mostly sunny skies. These temperatures are right around normal for December 5.

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The week ahead: Mostly quiet with a mid-week cooldown

/ December 3, 2023 at 9:30 PM

After a weekend in which clouds were prevalent but rain perhaps not so much, we get into a mostly quiet week ahead despite a few frontal passages that will gradually cool us off as we move through the week.

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Sunday’s forecast: Still unseasonably warm with scattered showers, maybe some thunder

/ at 6:22 PM

A cold front approaching the area should kick off some scattered showers at times throughout the day, with the best chances for rain generally occurring around midday to early afternoon. It’ll be one more unseasonably warm and muggy day across the area despite full overcast: lows will bottom out in the mid-60s — right in the neighborhood of the typical high for early December — with highs topping out in the mid-70s in the afternoon. It may be warm enough for some instability to develop, which could lead to a thunderstorm or two even as the front gets closer during the evening. No severe weather is expected, though. Generally speaking, rainfall amounts won’t be much to write home about — a few hundredths of an inch for most, with perhaps some locally heavier accumulation if a storm can fire. Shower chances taper after sunset, with the front to follow overnight.