Charleston Weather Blog

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

Weekend forecast: One more warm day before a front cools things off

/ January 9, 2026 at 7:19 PM

After a record high on Friday, we’ve got one more warm day ahead before a cold front begins to make things feel a little more like January for Sunday and especially the start of the new work week.

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Friday & the weekend: Morning fog returns as temperatures peak ahead of a front

/ January 8, 2026 at 7:26 PM

Another round of fog is expected overnight into Friday morning as abnormally warm temperatures continue across the Lowcountry. Lows will fall into the mid-50s, reaching the dewpoint with relatively calm winds. Once again, be prepared for low visibility and delays due to fog as you commute Friday morning. Like Thursday, the fog should mix out by mid-morning, and from there, temperatures will head to the mid-to-upper 70s. We’ll challenge the record high of 78° set in 2012 with a mix of sun and clouds in the afternoon.

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Thursday: Another warm day with dense fog possible in the morning

/ January 7, 2026 at 8:14 PM

We may get another abnormally warm January day off to a foggy start across a good bit of the area as winds go calm and temperatures fall to right around their dewpoints in the low-to-mid-50s. It’s not a slam dunk that we’ll run into fog, but better to be ready for it and the associated commute delays that may come along with it.

If it develops, fog should eventually mix out by mid-morning as temperatures head into the low 70s once again under generally partly cloudy skies. It’ll be a much warmer-than-normal day — a normal January 8 should only see highs peaking around 60° — but at least the record of 81° set in 2005 will remain unchallenged.

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Rest of the work week: Another uptick in warmth

/ January 6, 2026 at 9:51 PM

Warmer-than-normal temperatures will continue for the rest of the work week, with a stretch of 70° days expected beginning Wednesday. Lows Wednesday bottom out in the mid-50s — typical early January lows are closer to the upper 30s — while warming to the low-to-mid-70s under partly cloudy skies.

A few more clouds work their way in for Thursday and Friday as high pressure traverses to our north and a storm system to the west chucks some cirrus our way. We’ll cool down a touch for Thursday, but we will still remain well above normal as high pressure starts to ridge overhead. By Friday, surface high pressure is back offshore, and warmer air pumps right back in, sending temperatures to the mid and perhaps upper 70s, which may challenge record highs.

The next cold front approaches Saturday, which will be one more near-record-warm day before the front sends temperatures plunging below normal for Sunday into early next week.

Tuesday: Warmer than normal conditions continue, with another upswing later this week

/ January 5, 2026 at 9:16 PM

Our run of above-normal temperatures is just beginning, and will continue through Tuesday and the rest of the work week. Expect lows to bottom out in the upper 40s to around 50° on Tuesday morning, with temperatures warming into the upper 60s to low 70s in the afternoon under a mix of sun and clouds.

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Warmer-than-normal temperatures kick off the first full work week of 2026

/ January 4, 2026 at 3:21 PM

A quiet and warm week of weather lies ahead as we go back to work and school for the first time in 2026. Temperatures this week will climb some 10-15° above normal at times, but we should stay just short of any record highs.

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Sunday: Clearing up ahead of a warm week

/ January 3, 2026 at 10:33 PM

The cold front that brought some much-needed rainfall to the area on Saturday will clear the area for Sunday, bringing about a cooler, drier, and sunnier day after some patches of fog in the morning. Temperatures start around 40°, but northerly winds blowing in cooler air will keep temperatures capped below 60° for most of us. Sunday will be the coolest day of the week as high pressure shifts offshore, bringing about quite a warm spell for the first full work week of 2026.

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