We get a brief reprieve from the heat on Tuesday as the front that brought today’s deluge nudges just south enough for a little bit of cooler and drier air to work in, especially further inland. Mostly cloudy skies will be the rule as onshore flow persists throughout the day. We start the day in the low 70s, but dewpoints sneaking briefly back into the upper 60s could feel a little bit better than we’ve felt. Those dewpoints will start to creep back up, but the cloud cover and onshore flow keeps highs capped to the mid-80s. A stray storm can’t be totally ruled out near the coast; in fact some model data suggests a few downpours will be possible before sunrise. Wait and see on that, but most of us should get Tuesday in rain-free.
Heat and humidity continue for the rest of the week, with advisory-level heat indices remaining a distinct possibility, broken up only by isolated to scattered afternoon and early evening thunderstorms.
We’re back into the mid-90s Wednesday after a mid-70s start. Heat indices in the mid-100s will be common, with higher values possible closer to the coast where dewpoints will run a little higher. Don’t be surprised if another Heat Advisory comes out for Wednesday. A few of you could get lucky and get a thunderstorm to help cool things off, though the winds could be a bit strong at times in these. However, as is common with the summertime weather regime around here, widespread severe weather is not expected.
We’ll keep this going Thursday into Friday. Air temperatures peak on Thursday, topping out in the mid-to-upper 90s as winds go a little more westerly through about 5,000 feet. Once again, isolated to scattered showers and thunderstorms are possible in the afternoon as convective temperatures are reached and the seabreeze makes a slow push inland. Expect similar conditions Friday, with highs once again topping out in the mid-90s after an upper 70s start, with just a few showers and thunderstorms perhaps imparting relief.
Another hot summer day lies ahead for Tuesday, with just a few of us possibly seeing some relief from thunderstorms in the afternoon. We start the day in the mid-70s, warming to the mid-90s in the afternoon. Dewpoints in the low to mid-70s will make it feel closer to 103° at times, with even warmer heat indices possible in the wake of the seabreeze.
As mentioned, a few thunderstorms will be possible with a stalled front in the area, but not everyone will see a storm. A stronger storm or two can never be ruled out this time of year, but there is not a widespread risk for severe weather.
Near-normal temperatures and a few stray storms will mark Juneteenth across the Lowcountry. We start the day around 70°, warming to the upper 80s in the afternoon as onshore flow continues to keep temperatures a little lower. A few showers and maybe a thunderstorm will be possible, particularly in the afternoon, but many of us stay dry once again.
An approaching tropical wave — thankfully, of the open wave variety and nothing more organized — will be the weather feature of interest later Thursday into Friday. Ahead of the wave, we should see a mostly quiet day of weather with temperatures near normal and partly cloudy skies. Rain chances tick up Friday as the wave comes ashore, with scattered showers and thunderstorms a decent bet. It won’t rain all day at any one location, though. Temperatures Friday will be limited to the upper 80s with the shower and thunderstorm activity. We’ll start to get much warmer this weekend, with highs returning to the low to mid-90s well into next week.
We’ve got one more generally quiet day of weather coming up for Tuesday before turning a little more unsettled heading into the second half of the week. Temperatures will remain around if not a touch below normal as a solid onshore breeze keeps us on the “cool” side. We’ll see a few clouds from time to time, but overall, expect a mostly sunny day. The only downside to the onshore flow will be a moderate risk of rip currents at the beaches, so be alert if you are going to be heading into the surf.
The rest of the work week will generally trend warmer and stay mostly rain-free, especially the further inland you are. Expect generally partly cloudy skies Wednesday, though we’ll see a disturbance swing through later in the day that’ll add some high cloud cover to the mix. Expect highs to top out in the upper 80s to around 90° after a start around 70°.
The aforementioned disturbance in association with the stalled front nearby could kick up some stray showers and thunderstorms on Thursday, especially near the coast. Most locations inland of 17 could have a brief window for a storm or two Thursday morning, but the vast majority of us should get the day in rain-free. Temperatures get a little warmer, with a low 70s start yielding to highs in the low 90s.
The disturbance and associated low is out of here by Friday, yielding a warm and mostly sunny day. Once again, we start in the low 70s, warming to the low to mid-90s in the afternoon. We’ll keep this warming trend going into the weekend, with upper 90s possible on Saturday.
It’s a low bar to clear, but Tuesday will be much quieter than Monday was weather-wise as drier air noses in from the northeast. This should be enough to keep storms, much less significant cloud cover, at bay for a day. We start the day in the upper 60s to around 70°, warming to about 90° in the afternoon under mostly sunny skies. Unfortunately, we’ll need the good weather for some cleanup after severe storms brought large hail and damaging winds to the Summerville area on Monday evening.
Scattered thunderstorms return to the forecast on Wednesday afternoon, once again focusing inland along and ahead of the seabreeze. It’ll be another mild start around 70°, warming to near 90° in the afternoon. Dewpoints around 70° will help drive heat indices to around the low to mid-90s.
Thunderstorm chances peak Thursday ahead of a cold front. Expect scattered to numerous storms to develop ahead of the seabreeze first as temperatures head to the mid-90s with dewpoints in the low 70s. Heat indices should crack 100° in the afternoon, so if you have outdoor plans, be ready to move those indoors. Thunderstorm chances will approach the coast later Thursday evening into the overnight as the front draws closer, and a stronger storm or two can’t be totally discounted. Be alert to quickly changing conditions if your Thursday night includes some out and about time.
The front clears the area Friday. It won’t get cooler, but the dewpoints will be dropping throughout the day, so while highs top out in the mid-90s once again, we shouldn’t see the heat indices we saw on Thursday. A stray storm might be possible in the afternoon, but all in all we should see plenty of sunshine and a rain-free day for many.
Warm and muggy conditions can be expected for the rest of the work week, with some periods of thunderstorms possible especially Wednesday and Thursday.
Tuesday starts around 70° and warms to near 90° in the afternoon. A few thunderstorms will be possible, particularly further inland near the I-95 corridor. Not everyone will see storms, and the Charleston metro area in particular should be clear of any unsettled weather by evening in the wake of the seabreeze.
Disturbances aloft working with ample instability will maximize shower and thunderstorm chances Wednesday and Thursday. The best risk for storms will be during the afternoon and evening hours. Severe weather isn’t expected, though storms could pack some gusty winds where outflow boundaries collide. Temperatures Wednesday top out once again near 90°, while we turn even warmer on Thursday with highs in the low to mid-90s. Given dewpoints in the low 70s, we could get close to heat indices around 100°.
A front approaches the area on Friday, but drier air will be working its way in, so while temperatures will be similar to Thursday (low to mid-90s), dewpoints will be trending lower. This should also keep the thunderstorm risk a little more at bay, leading into a generally quiet weekend.
Quieter weather looks to generally be in store for the rest of the abbreviated work week as temperatures run on a cooling trend heading toward the weekend (and the end of May). We start Wednesday in the mid-to-upper 60s, warming to around 90° in the afternoon. Yes, still quite warm, but with some drier air aloft mixing dewpoints down to the mid-50s, relative humidity values will be in the 30-45% range. Expect just a few clouds from time to time with no expectation of any seabreeze showers or thunderstorms.
A bit more in the way of cloud cover arrives Thursday into Friday as a weak front approaches. Thursday’s highs run in the mid-to-upper 80s, while Friday’s highs run solidly in the mid-80s. Showers don’t appear likely, but can’t be totally ruled out with the frontal passage later Thursday into Friday. Dewpoints remain reasonably tame, though slightly cooler temperatures will elevate the relative humidity a little bit. All in all, not a bad end to May (and climatological spring).