After a very wet weekend that included flooding rains at Mt. Pleasant and Isle of Palms, we should see a bit of a downtrend in rain chances as some of the deeper moisture that’s been hanging around this weekend moves offshore and further into the Atlantic. The pesky cold front that’s been hanging around will start the day just to our south, lifting north during the afternoon, so between this and the seabreeze, it’s still possible for a few afternoon thunderstorms to fire. Temperatures will run in the mid-70s Monday morning, topping out in the low to mid-90s in the afternoon. Heat indices should run around 102-106°, highest near the coast.
Midsummer heat and humidity will not relent this weekend with temperatures continuing to run above normal courtesy of Atlantic high pressure pumping warm and moist air into the area while high pressure remains resident aloft for a few more days.
Heat and humidity continues for Friday and the weekend with high pressure aloft the main weather driver. Atlantic high pressure will continue to drive high dewpoints into the area, and that not only will drive heat indices well into the 100s, but it will keep us quite toasty at night, too. Expect lows in the upper 70s each day, perhaps not dropping below 80° closer to the coast and downtown.
We’re back in the 90s on Thursday as we get a brief lull in between disturbances, but showers and thunderstorms will return in the afternoon and evening as a slug of moisture from what we expect will be the remnants of Tropical Storm Arthur, which was christened earlier today, There will be a risk for a storm or two to produce some damaging wind gusts, but the overall severe weather threat this far to the east is fairly marginal. Will keep an eye out, though.
Halloween may be full of frights, but the weather won’t be one of them — seasonable and quiet weather is in store heading into Sunday with high pressure in control. Lows Friday bottom out in the mid-40s in the metro, with perhaps even lower temperatures further inland and in rural areas. We’ll warm to the mid-to-upper 60s in the afternoon with predominantly sunny skies and a gentle breeze out of the west. Saturday is essentially a carbon copy of Friday, though winds will be a little calmer and shifting direction out of the northeast and east. Don’t forget to set your clocks back an hour Saturday night as we fall back to Standard Time.
We’ll start to see dewpoints to climb back up and cloud cover begin to thicken as Sunday goes on in advance of the next storm system advancing out of the Gulf. Rain should hold off for the vast majority of the day, though a shower or two can’t be ruled out in the late evening. Temperatures on Sunday run a little warmer, with lows in the mid-to-upper 40s and highs approaching 70° despite the increasing cloud cover.
A cold front will swing through overnight, scouring out the clouds and ushering in drier high pressure behind it. It’ll be great to see the sun, which will make highs in the mid-60s feel quite nice. We’ll have a bit of a westerly breeze in the wake of the front, so keep that in mind if you have any plans to dine al fresco, but otherwise, it looks like a really good day of weather across the Lowcountry.
After the coolest day since late February — the high at the airport only peaked around 57° — we’ll turn warmer on Wednesday as an approaching cold front scours out the wedge of high pressure that brought us a dreary, drizzly Tuesday. We’ll start Hump Day around 50° under mostly cloudy skies once again. A warm front lifting northward will push through the area later in the afternoon, and it’s that warm front along with some breaks in the cloud cover which will help us warm to the mid-to-upper 60s later in the day. Shower chances will return in the evening through the overnight as a band of rain ahead of the cold front moves by.
Showers should depart by the time most of us get Thursday underway. We’ll start in the upper 40s to around 50° once again, warming to the mid-60s in the afternoon with much more in the way of sunshine than we’ve seen so far this week. Clearer skies overnight Thursday will allow Halloween to start a little cooler, generally in the mid-40s in the metro (with lower temperatures possible further inland as well as in some more rural areas). Unfettered sunshine will send temperatures in the mid-to-upper 60s in the afternoon. Trick-or-treaters and their accompanying guardians (where applicable) should expect temperatures to fall into the 50s around and after sunset.
More overcast is in store for Tuesday despite low pressure departing the area. The overcast combined with gusty northerly winds and a few lingering showers will keep us on the cool side in the afternoon, with highs only peaking in the low 60s after a start to the day in the mid-50s. Showers should taper off by evening, with a rain-free period expected until Wednesday afternoon.
