Charleston Weather Blog

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

Friday & the weekend: Warmth and showers return

/ November 30, 2023 at 5:45 PM

Our recent chilly spell will come to an end on Friday as warmer and more humid air moves back in just in time for the start of meteorological winter (December-February). We start Friday in the upper 40s — well above where we have started the past few mornings — and warm to the mid-70s in the afternoon. Unfortunately, showers will also be returning to the forecast, with isolated to scattered showers developing in the afternoon and increasing in coverage overnight heading into Saturday.

Saturday should feature the greatest shower coverage, with on and off rainfall expected. It’ll still be warm, though — lows start in the low 60s, roughly where our high was on Wednesday — with temperatures heading to the low-to-mid-70s despite the rain in the area. Showers will keep on going into Sunday, though coverage may become a little more sparse as we head into the afternoon and evening hours. That being said, most of the models still have showers going well into Sunday night, so keep the rain gear handy. We’ll run about as warm, if not slightly warmer, than Saturday, with highs running solidly in the mid-70s.

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Thursday: One more round of morning frost and freeze

/ November 29, 2023 at 7:33 PM

Keep those plants covered or indoors: Frost and freeze conditions will return Wednesday night into Thursday morning as cool high pressure remains in place for one more day. Lows will bottom out in the low to mid-30s in much of the metro, with the warmer temperatures near the water. We could even see some 20s further inland and in more rural locations as well. Make sure your pets have a safe place to be tonight!

Temperatures on Thursday will warm to the low-to-mid-60s in the afternoon under partly cloudy skies, perhaps running a few degrees warmer than Wednesday’s highs, but still on the cool side of normal for late November.

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Rest of the work week: Freeze warning Wednesday morning, frost possible Thursday…and 70s on Friday

/ November 28, 2023 at 7:41 PM

A Freeze Warning is in effect for Tuesday night and Wednesday morning. Expect temperatures to fall into the 20s inland of 17-A, with temperatures around 30° in much of the rest of the metro area. Places closer to the water such as downtown and the islands should stay just above freezing, though frost will be a concern there as well. Bring in your sensitive plants and make sure your pets have a warm place to be tonight.

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Tuesday: Chilly day with decreasing cloud cover; Freeze Watch for Wednesday morning

/ November 27, 2023 at 6:13 PM

Tuesday will begin a string of a few chilly mornings across the metro area. Temperatures will start in the mid-30s; breezy northwest winds will make it feel closer to freezing, so bundle up accordingly. (There should be too much wind and too little moisture for frost formation, BTW.) Cloud cover will hang around for the morning before scouring out in the afternoon. Even so, highs will struggle to the mid-to-upper 50s as northerly winds continue to blow cold air into the region.

There will be a chance for a little salt water to creep up out of some drains around Lockwood as well as out of Gadsden Creek with Tuesday morning’s high tide, though it should peak just shy of coastal flood criteria. Still, you don’t want to drive through salt water if you can help it. High tide on Tuesday morning is expected to peak around 8:17am.

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The week ahead: Mostly quiet; first freeze possible mid-week

/ November 26, 2023 at 5:31 PM

After a very chilly and raw Sunday in which the high temperature didn’t (as of this writing, anyway) reach 50°, temperatures make a brief rebound for Monday in the wake of a front as high pressure builds in. Diminishing cloud cover and northwesterly winds will help temperatures rebound to the low 60s on Monday, which will feel positively wonderful. Temperatures will then drop into the upper 30s for Tuesday morning as the cooler high pressure begins to settle in over the area. Temperatures will only reach the mid-50s on Tuesday despite ample sunshine. Radiational cooling conditions improve tremendously as winds go light and skies go clear Tuesday night into Wednesday morning, and this will allow temperatures to get down to freezing for the first time this season in many spots in the metro, particularly inland. Highs will head to the mid-50s once again with full sunshine.

From there, high pressure begins to move away, turning nature’s heat pump back on as winds go more southerly. We’ll get off to another frosty start Thursday morning before warming to the low 60s in the afternoon. Friday will be even warmer, with lows in the mid-40s (closer to normal for this point in the year) and highs in the low 70s in the afternoon. We’ll keep this warmer weather going into the weekend, with lows well above normal for Saturday and Sunday, albeit with some shower chances as mid-level disturbances swing through from time to time.