We hit 74° at the airport on Monday, and we’ll likely do the same — if not even running slightly warmer — on Tuesday as high pressure aloft and at the surface remains in control. We’ll likely start the day with another round of fog, and it might be dense in spots as well, so be ready to allow a little extra time to get to where you’re going. (Unfortunately, the fog horns near the coast might be pretty loud, too.) Lows in the mid-50s — about 15° above normal for mid-December — will warm quickly into the mid-70s once the fog dissipates in the morning. We’ll stay rain-free for one more day, with partly cloudy skies expected. Should be a nice day to spend a little time outside if you can!

Rest of the work week: Unsettled on Wednesday, then more seasonable Thursday and Friday with a sharper chill looming

A cold front will move through the area Wednesday, bringing with it the potential for showers and maybe even a few rumbles of thunder during the afternoon and evening. It’ll be one more very mild day before we see temperatures reset a bit post-front; expect another morning of mid-50s lows and another afternoon of mid-70s highs. The airmass starts to change during the day Thursday; we’ll get one more mild mid-50s start, but temperatures will only head to about the mid-60s in the afternoon under partly cloudy skies. Friday will be a seasonable day for mid-December, just slightly on the warm side of normal with lows in the mid-40s warming to the mid-60s in the afternoon.

A reinforcing front will move by Friday night/early Saturday morning, and this is going to usher in a much colder airmass for the weekend heading into the first part of next week. Expect lows on Saturday in the mid-30s, with highs only peaking in the low 50s. It’ll be even colder on Sunday, with subfreezing lows and highs only in the mid-40s despite plenty of sunshine. We’ll have a repeat temperature performance on Monday, with some moderation in the airmass expected as we head into Christmas Day.

Follow my Charleston Weather updates on Mastodon, Bluesky, Instagram, Facebook, or directly in a feed reader. Do you like what you see here? Please consider supporting my independent, hype-averse weather journalism and become a supporter on Patreon for a broader look at all things #chswx!