Charleston Weather Daily

A slightly cooler and drier airmass begins to build in Tuesday. We’ll see a few afternoon thunderstorms, but not the coverage we’ve seen the past couple days. Coastal flooding will be an issue with the evening high tides, too, as the full moon combines with onshore winds to drive tidal departures higher. Forecast post: chswx.com/blog/2023… Transcript

We have another warm and eventually unsettled day ahead for Monday as a front meanders in the area. Said front starts to get by Tuesday, though, and drier air will work its way in for mid-week, making it feel almost decent outside Wednesday and Thursday before 105°+ heat indices return for the weekend. Transcript

105°+ heat indices return to the forecast on Sunday as the tropical low departs and downslope flow kicks in, sending air temperatures back to the mid-90s. A few thunderstorms will be possible in the afternoon and evening hours, and we’ll want to keep an eye to the northwest for a possible thunderstorm complex as well. Forecast post: chswx.com/blog/2023… Transcript

A tropical low will keep off and on showers and thunderstorms in the forecast on Saturday, which should keep highs in the 80s one more time before we warm up again back to the mid-90s on Sunday. Forecast post: chswx.com/blog/2023… Transcript

Watch for off and on showers and a few thunderstorms on Friday as onshore flow continues to drive more atmospheric moisture into the area. Highs top out around 90° with heat indices around 100°. Dewpoints head even higher this weekend, driving heat indices into the danger zone on Saturday and even more on Sunday. Forecast post: chswx.com/blog/2023… Transcript

More heat, humidity, and a few afternoon storms will be in the forecast for Thursday, Friday, Saturday, AND Sunday. (Side note: It tests one’s resolve to repeat themselves so much.) Forecast post: chswx.com/blog/2023… Transcript

Expect more of the same weather on Wednesday and beyond as high pressure generally remains in control: low-to-mid-90s highs, heat indices near 105°, and isolated to scattered afternoon storms. Forecast post: chswx.com/blog/2023… Transcript

Expect a mild and muggy start to yield to another quite warm day as highs top out in the mid-90s in the afternoon with heat indices pushing 100-101° for a time. A thunderstorm or two can’t be ruled out, but much of us look to stay rain-free. NHC is watching an area in the Atlantic for possible tropical development with a wave that’s approaching the southeast US for the weekend. Right n...

After perhaps one more muted round of scattered storms on Monday, we will see a drying trend take hold with just isolated afternoon storms for the rest of the week. Highs top out in the low 90s each afternoon, with warmer highs in the mid-to-upper 90s expected over the weekend. Forecast post: chswx.com/blog/2023… Transcript

Sunday will provide another round of warm and muggy weather to start before showers and thunderstorms develop in the afternoon. Watch for heavy rain and gusty winds at times. Plus, a look at the first hurricane of the 2023 season and a brief recap of a tornado scare in northern Berkeley County on Saturday evening. Forecast post: chswx.com/blog/2023… Transcript

The oppressive ridge of high pressure that drove temperatures into the danger zone repeatedly this past week is a thing of the past, replaced by a trough digging in from the north. Highs top out in the low 90s with heat indices around 100° each afternoon before thunderstorms develop. An area in the tropics also has a 70% chance of development in the next seven days as it moves westward toward the...

Friday will see temperatures soaring back into the upper 90s one more time before the subtropical ridge loses influence across the area, sending highs a little lower for Saturday and Sunday. Heat indices approaching 110° will be possible Friday, and another heat advisory might be needed. We could also see another thunderstorm complex, but guidance suggests it misses us to the south and west. (Wait...

Thursday will once again feature heat indices approaching 110° in the Charleston metro area before a disturbance ripples by, which is expected to instigate some showers and thunderstorms. A few of those storms could be severe with gusty winds and large hail. The heat wave peaks on Friday with air temperatures in the upper 90s and heat indices returning to 110°+ before scattered storms in the after...

Heat and humidity continue Wednesday through the rest of the work week as the subtropical ridge continues to hang around for a couple more days. Heat indices near 105-110 (and maybe even higher) will be possible each afternoon, especially Thursday and Friday when air temperatures approach the upper 90s. Shower and thunderstorm coverage will be sparse at best with extensive mid-and-upper-level dry...

The subtropical ridge builds further into the area for Tuesday, turning heat up another notch – highs topping out in the mid-to-upper 90s expected – with only a slight chance of an afternoon storm. Heat peaks Wednesday-Friday with highs in the upper 90s each afternoon, and heat indices potentially approaching or even exceeding 110° in the afternoons. Forecast post: chswx.com/blog/2023&...

After one more evening of scattered showers and thunderstorms on Monday, we should see a downtick in thunderstorm coverage – and an uptick in air temperatures – as the subtropical ridge builds in aloft. Highs could approach the upper 90s by mid-week. Forecast post: chswx.com/blog/2023… Transcript

Sunday’s forecast features more of the same – heat, humidity, and a few afternoon and evening thunderstorms. Temperatures will start in the upper 70s away from the coast, and perhaps not dropping below 80° at the coast once again, before warming into the low 90s in the afternoon. Thunderstorms may be capable of producing torrential, flooding rainfall in a few spots, with frequent light...

It’s a copy and paste weather weekend as highs in the low 90s combining with dewpoints in the mid-70s yield heat indices approaching the danger zone (105°) each afternoon before showers and thunderstorms fire on the seabreeze. Forecast post: chswx.com/blog/2023… Transcript

Expect increasingly hot and humid conditions starting Friday into the weekend, with afternoon and evening thunderstorms along and ahead of the seabreeze each day. Forecast post: chswx.com/blog/2023… Transcript

Thursday will feature one more generally quiet weather day aside from a stray shower or storm generally inland. Highs top out in the low 90s under a mix of sun and clouds. Storm chances – and oppressive heat and humidity – return to the forecast this weekend. Forecast post: chswx.com/blog/2023… Transcript

Quiet weather continues for Wednesday as temperatures top out in the low 90s once again under mostly sunny skies. Dry air aloft will give us another fairly clean blue sky, and showers and thunderstorms will be held to a dull roar until Friday. Forecast post: chswx.com/blog/2023… Transcript

Highs Tuesday won’t be in the “blazing” category like we’ve seen, with air temperatures topping out around 91° under partly cloudy skies. We should still see heat indices approach 100° in the afternoon, though, especially as the seabreeze moves by. An isolated storm or two will be possible, but much of the atmosphere is pretty dry and so don’t expect anything that fir...

Monday could be an eventful weather day across the area with the potential for flooding rains in some spots as a cold front gets close to the area in conjunction with some favorable upper-air conditions. We don’t get out of the 80s on Monday for the first time since late June, but we’re back into the 90s by Tuesday, warming into the weekend which could potentially see Heat Advisory-lev...

Another hot day is in store for Sunday, though some drier air will keep heat indices just below 105°. The best chance for thunderstorms kicks up around mid-afternoon and lasts through the evening hours; the aforementioned drier air should keep coverage a little lower than what we saw on Saturday. Forecast post: chswx.com/blog/2023… Transcript

We stay warm, muggy, and then turn a little stormy each afternoon this weekend. Expect lows in the mid-70s, highs in the mid-90s, heat indices around 105°, and a scattering of afternoon and evening thunderstorms. Forecast post: chswx.com/blog/2023… Transcript