Charleston Weather Blog

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

Weekend forecast: No weather worries

/ October 11, 2024 at 9:29 PM

We have an outstanding weekend of weather ahead as high pressure remains in control. After our first low in the 40s Friday morning, Saturday starts back in the upper 40s once more, but winds will start to swing around to the south and that will begin to help moderate the airmass a bit. Expect just a few passing clouds Saturday afternoon, but otherwise, lots of sunshine will be the rule.

Sunday will be a warmer day. We start the day in the mid-50s, warming back into the low 80s in the afternoon under mostly sunny skies. It’ll be a very comfortable low 80s, though, as humidity will be a non-factor with dewpoints in the mid-50s.

I hope you get a chance to enjoy this wonderful weekend of weather!

Friday & the weekend: Tons of sunshine and a quick shot of fall

/ at 6:08 PM

Get ready for the first low 50s of the season starting tomorrow morning! Lows are forecast to bottom out around 50° — and into the upper 40s further inland — for the first time since April 24 on Friday morning. This will yield to highs in the low 70s in the afternoon under predominantly sunny skies. The northeast breeze will still be elevated in the morning, gradually winding down as we get into the evening.

Saturday gets off to a similarly chilly start, though the airmass will begin to moderate as highs climb back into the upper 70s in the afternoon with nearly uninhibited sunshine expected. The warming trend continues Sunday, with a slightly warmer start in the mid-50s warming to highs in the low 80s in the afternoon.

The only weather-related concern of note will be the risk for some minor flooding around the afternoon high tides Friday and again on Saturday as the northeast breeze persists. However, major flooding disruptions do not appear to be in the cards.

Finally, there’s nothing in the tropics we need to be worried about. In fact, it may be a while before we get any more rain. A dry front early next week could usher in even cooler weather, well below normal for mid-October standards. Watching it…

Thursday: A brief brush with Milton, then excellent weather for the weekend

/ October 9, 2024 at 7:53 PM

Our brush with Milton arrives on Thursday. The Tropical Storm Watch was dropped as tropical storm conditions are not expected on land (though a Tropical Storm Warning is in effect for the coastal waters). However, that doesn’t change the forecast: It’ll still be a breezy day, with a Wind Advisory in effect for the area from 6 AM to 8 PM as the gradient between high pressure to the north and Milton to the south pinches and drives gusts upwards of 40 MPH across the area. Moderate to major coastal flooding is also expected during the afternoon, with some salt water flooding possibly persisting into early evening depending on how high the tidal departure ends up being. Right now, moderate flooding is forecast as the harbor should peak at 7.8′ MLLW with high tide just before 2 PM. This will close roads in downtown Charleston and parts of Mt. Pleasant, especially around Long Point Road. Be ready to reroute in case you encounter a flooded road.

The rain threat, however, is minimal. We may see a few showers sneak in from time to time, but we will miss out on Milton’s rainfall. In fact, we can expect skies to start to clear as we get further into the afternoon and evening. Temperatures will start in the low-to-mid-60s, warming to the mid-70s in the afternoon.

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