Charleston Weather Blog

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

Friday & the weekend: Turning hotter, severe risk increases

/ June 6, 2025 at 12:27 AM

The good news for Friday is that storm chances trend downward, with just some isolated storms on the seabreeze expected in the afternoon. We could stand to dry out a bit, especially after the deluge in Summerville on Thursday, and Friday gives some of us an opportunity to do exactly that. It’ll be very summerlike, though, with highs around 90° after a low 70s start, and low-70s dewpoints will make it feel more like the mid-to-upper 90s.

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Thursday: More storms, especially in the afternoon

/ June 5, 2025 at 12:26 AM

Thunderstorms remain likely, especially in the afternoon, as low pressure lifts north and away from the area throughout the day. A warm and humid airmass remains in place, and this will get us off to a balmy start in the low 70s. Scattered to numerous showers and thunderstorms should redevelop by afternoon, keeping highs suppressed to the mid-80s. Rain could still be heavy at times, with spots potentially reaching another inch of rain or so before it’s over. Not everyone will see that kind of rain, though.

Breezy conditions remain possible especially at the coast and over the waters, so it’ll be another day where boating and beaching will be generally unadvisable. The good news, though, is that with the low pushing inland, the risk for any sort of tropical development — low as the risk was this entire time — has ended. (Take the wins where you get them.)

Rest of the work week: Turning soggy Wednesday and Thursday as a coastal low moves by

/ June 3, 2025 at 7:31 PM

A coastal low will bring numerous showers and thunderstorms, some with potentially heavy rain, to the Lowcountry starting late tonight and peaking Wednesday into Thursday.

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Tuesday: One more quiet day, then the rain begins again

/ June 2, 2025 at 9:21 PM

We’ve got one more day of quiet weather in store for Tuesday before low pressure offshore begins to send moisture back our direction starting Wednesday. Temperatures Tuesday start in the mid-60s, and we’ll warm to the mid-to-upper 80s under generally partly cloudy skies as high pressure builds in briefly from the north.

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The week ahead: Quiet start, but unsettled weather returns later in the week

/ June 1, 2025 at 8:18 PM

We will stay quiet heading into the first couple days of the work week, but low pressure moving into the area will help turn the weather more unsettled for the second half of the week and into the weekend.

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It’s that time again: Hurricane season starts today

/ at 9:30 AM
A statue of a cow (Bessie the Coburg Cow) on a platform in the West Ashley area of Charleston, SC.
Bessie the Coburg Cow, the actual chief meteorologist in the Lowcountry. When she hides, run.

Living at the coast is pretty amazing for the most part. We say “for the most part” because there is one key exception to the rule: Hurricane season, which resumes today and will run through November 30. Once again, we’ll be monitoring the tropics with vigilance throughout the summer and fall, watching for potential threats to the Carolina coastline that might require us to hide our cows and head west.

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Weekend forecast: Nice respite for Saturday, a storm possible Sunday

/ May 30, 2025 at 8:45 PM

A welcome respite from the humidity and constant threat of storms arrives in the wake of a cold front on Saturday. It’ll be noticeably cooler in the morning, with lows bottoming out in the low 60s with the cooler and drier air setting into place. Temperatures warm nicely to the mid-80s in the afternoon, and humidity will be on the low side for the end of May, which is a nice cherry on top.

A stalling front and some energy aloft could stir up a few thunderstorms Sunday afternoon, but otherwise it should still be a decent day of weather outside of those storms as dewpoints mix down to the upper 50s in the afternoon. You’ll want to keep an eye out for popups as you embark on your outdoor activities, but many of us should be rain-free for much of the day.