The weather story for the rest of the work week will be the intensifying heat wave across the area as high pressure building in aloft continues to strengthen, while southwesterly winds continue to pump in high-dewpoint air that will send heat indices over 110° in spots.

It’s a very toasty start to the school year for Charleston County on Tuesday as this week’s heat wave will begin in earnest as high pressure aloft takes hold. We’ll start the day on a very mild note, with lows in the mid-to-upper 70s warming to the mid-90s in the afternoon. Dewpoints will run in the low-to-mid-70s inland, while closer to the coast, they’ll run in the upper 70s. That will help drive heat indices solidly into the 100s, with the highest heat indices expected in the Highway 17 corridor and points east. A Heat Advisory will be in effect for Charleston County and the southern part of Berkeley County from 11am-8pm, when heat indices should exceed 108° and could top out near 111° as the seabreeze pushes by. The aforementioned high pressure will make it much harder for thunderstorms to develop, though a couple popup showers will be possible. With that in mind, though, don’t count on thunderstorms to impart any relief from the heat.

The main weather story this week will be the return of heat that will be reminiscent of what we experienced earlier in July, with another round of dangerous heat indices pushing 110-115° at times.

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.

The week ahead will continue to feature warm and muggy conditions, with an uptick in rain chances as we get over the hump toward the weekend.

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.

Summer heat and humidity continues as we close June and start July, with sustained heat continuing into the Fourth of July weekend.

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.