Charleston Weather Blog

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

Rainy and warm conditions for the weekend, but turning much colder for MLK Day ahead of a winter storm

/ January 18, 2025 at 12:11 AM

We have a rainy day on tap for Saturday as a complex storm system sweeps across the eastern half of the country. We’ll start the day in the upper 30s to around 40°, but warm to around 60° in the afternoon as warm, humid air moves in ahead of the storm system’s cold front. We’ll stay in the rain for a fair bit of the day after daybreak, though there will be breaks at times as well.

Showers depart early in the day on Sunday, which will be the warmest day in the forecastable future as highs top out in the mid-60s ahead of the cold front. Said front should swing through by evening, and we’ll start to see a sharp change in the airmass after that as Arctic air spills into the region from the northwest. Lows on Martin Luther King, Jr. Day bottom out in the upper 20s, heading to only the low 40s despite plenty of sunshine.

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Friday & the weekend: A touch more mild but unsettled as we monitor winter weather potential next week

/ January 16, 2025 at 10:54 PM

Friday will offer one more quiet day before an extended unsettled period kicks in starting this weekend, culminating in possible winter weather for the middle of next week.

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Thursday: Sunshine and a little warmer after a subfreezing start

/ January 15, 2025 at 10:55 PM

We start Thursday in the upper 20s to low 30s across the metro, but temperatures will ultimately end up a few degrees warmer than Wednesday under mostly sunny skies. This will be the second to last day of generally quiet weather before an unsettled period begins this weekend and lasts into next week, which will turn very cold and perhaps somewhat interesting winter weather-wise, too.

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Rest of the work week: Quiet and seasonably cool weather continues

/ January 14, 2025 at 10:29 PM

There’s not much to write home about weather-wise for the rest of the work week as generally quiet conditions continue through Friday before turning more unsettled over the weekend.

We start Wednesday right around freezing as a dry front comes through, which will help hold highs down to the low 50s in the afternoon despite plenty of sunshine. Winds turn a little more westerly on Thursday, and after a subfreezing start, we’ll warm to the mid-to-upper 50s in the afternoon under plenty of sunshine. We’ll keep this going for one more day on Friday, with lows right around the freezing mark and highs in the mid-50s with plenty of sun.

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Tuesday: Sunshine returns

/ January 13, 2025 at 9:27 PM

After a dreary Monday the 13th, we’ll see much more sunshine on Tuesday as high pressure rebuilds across the area. Our run of cooler-than-normal temperatures will continue, but it won’t be quite as bad; lows bottom out in the low 30s, just under freezing, and warm to the mid-50s in the afternoon. You’ll still probably need a jacket, but the bitterness of the cold will come down a notch.

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The week ahead: A little rain Monday, then mostly quiet — and chilly — until the weekend

/ January 12, 2025 at 10:37 PM

Below-normal temperatures will continue for much of the upcoming week before a bit of a reprieve over the weekend (albeit with rain).

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Weekend forecast: Rain departs Saturday, with sunshine (and continued chill) thereafter

/ January 11, 2025 at 12:47 AM

After a day in which we received a trace of snow at the airport for the first time since the January 2018 winter storm, we will dry out on Saturday with low pressure moving away from the area. We start the day with showers tapering off in the early morning; these should be gone by mid-morning, though. Lows will bottom out in the 30s overnight but we’ll be warming up as the night goes on, and we should wake up to temperatures in the 40s Saturday morning. As low pressure departs, so does the cloud cover, and we should end up with a good bit of sunshine before it’s all said and done. Expect highs to reach around 50-51° or so — you’ll definitely still want the jackets.

Sunday starts out in frigid fashion once again with lows in the mid-20s expected. Highs will only reach about 50° despite plenty of sunshine as northerly winds continue to keep the airmass a little on the chilly side. The good news is that we should be largely dried out before Sunday morning’s freeze, so I’m currently not anticipating any traffic concerns. Stay warm and enjoy the weekend!