Charleston Weather
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Charleston Weather
@chswx.com
Weather forecasts and alerts for the Charleston, SC metro area (Berkeley/Charleston/Dorchester counties), first popularized on Twitter by @jaredwsmith.com.

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Now that Bluesky’s added per-account notifications, you can now get your weather information pushed to you on demand whenever I post. One less reason to hang around over *there!*
Low pressure aloft turns Tuesday a bit more unsettled, but a southward-moving cold front sets a noticeably more seasonable tone beginning Wednesday and heading into the weekend.
Tuesday: Another warm and occasionally stormy day, but changes are afoot
Low pressure aloft turns Tuesday a bit more unsettled, but a southward-moving cold front sets a noticeably more seasonable tone beginning Wednesday and heading into the weekend.
chswx.com
September 22, 2026 at 3:09 AM
The week ahead gets off to a hot, humid, and unsettled start, but by the end of the week, temperatures will be more befitting of — if not a few clicks below — what we'd expect from late September.
The week ahead: Unsettled and warm start, but seasonable conditions arrive this weekend
The week ahead gets off to a hot, humid, and unsettled start, but by the end of the week, temperatures will be more befitting of — if not a few clicks below — what we'd expect from late September.
chswx.com
September 21, 2026 at 3:44 AM
Showers and thunderstorms are developing across inland areas of the Tri-County and moving slowly southwestward. Be ready for heavy rain and lightning. When thunder roars, go indoors!
September 19, 2026 at 7:25 PM
An upper low stalling out over Florida combined with an approaching (then stalling) front will help turn things a little more unsettled this weekend. https://chswx.com/blog/2026/09/18/weekend-forecast-warm-and-muggy-as-thunderstorm-chances-return/
Weekend forecast: Warm and muggy as thunderstorm chances return
An upper low stalling out over Florida combined with an approaching (then stalling) front will help turn things a little more unsettled this weekend.
chswx.com
September 19, 2026 at 1:26 AM
Watching showers and thunderstorms to the north as they sink southward. There’s an outside shot that these could survive into the Tri-County overnight, albeit in a weakening state.
September 19, 2026 at 12:05 AM
Summer is far from finished with us yet. After a couple days with relatively drier air and slightly cooler temperatures, we're back to the 90s on Friday. https://chswx.com/blog/2026/09/17/friday-the-weekend-heat-humidity-and-storm-chances-resume/
Friday & the weekend: Heat, humidity, and storm chances resume
Summer is far from finished with us yet. After a couple days with relatively drier air and slightly cooler temperatures, we're back to the 90s starting Friday with shower and thunderstorm chances returning over the weekend.
chswx.com
September 18, 2026 at 2:58 AM
Drier air courtesy of high pressure wedging southwestward across the area will characterize the rest of the work week, bringing slightly more comfortable dewpoints to the area and seasonable temperatures for mid-September.…
Rest of the work week: An ever-so-brief encounter with drier air
Drier air courtesy of high pressure wedging southwestward across the area will characterize the rest of the work week, bringing slightly more comfortable dewpoints to the area and seasonable temperatures for mid-September.
chswx.com
September 16, 2026 at 3:29 AM
Some refreshing-looking dewpoints in store tomorrow morning as drier air pushes in from the northeast. Dewpoints in the 60s will be a nice change from the summer mugginess, that’s for sure.
September 16, 2026 at 2:58 AM
A front coming through on Tuesday will knock temperatures back from the record levels of the past two days, bringing some breezy conditions and maybe some coastal flooding in the process. https://chswx.com/blog/2026/09/14/tuesday-breezy-and-not-quite-as-hot/
Tuesday: Breezy and not quite as hot
A front coming through on Tuesday will knock temperatures back from the record levels of the past two days, bringing some breezy conditions and maybe some coastal flooding in the process.
chswx.com
September 15, 2026 at 2:11 AM
We’ve reached 94° at the airport, which ties the record high for the date set in 1938 and last tied in 1991. Still plenty of time to warm beyond that, too.
September 14, 2026 at 5:55 PM
Temperatures in the mid-to-upper 80s are common as we head toward lunchtime. The record high of 94° is very much in jeopardy today, and we’re not talking Trebek.
September 14, 2026 at 3:14 PM
We tied a record high Sunday, and should at least threaten if not break the daily record again on Monday. From there, slightly cooler high pressure builds in from the northeast, bringing a little whiff of more seasonable air for mid-September.
The week ahead: Record heat possible Monday, but a whiff of seasonable air coming
We tied a record high Sunday, and should at least threaten if not break the daily record again on Monday. From there, slightly cooler high pressure builds in from the northeast, bringing a little whiff of more seasonable air for mid-September.
chswx.com
September 14, 2026 at 3:27 AM
The Flash Flood Warning for portions of Charleston County, which included Adams Run, Jacksonboro, Ashepoo, and Ritter, will expire at 6:30 PM.
September 11, 2026 at 10:23 PM
The heavier thunderstorms across the Charleston metro have weakened considerably after moving into sinking air in the wake of the seabreeze. However, if you’re headed west out of Charleston toward Jacksonboro, there’s a flash flood warning there. Be ready for slowdowns heading west on 17.
September 11, 2026 at 9:21 PM
Flood Advisory #72, which included North Charleston, Hanahan, Hollywood, Ravenel, and I-26/526 Interchange in Berkeley, Charleston, and Dorchester counties, has been cancelled.
September 11, 2026 at 9:04 PM
Flood Advisory #72 for portions of Berkeley, Charleston, and Dorchester counties, including I-26/526 Interchange, Ravenel, Hanahan, and North Charleston, continues until 6:15 PM.
September 11, 2026 at 8:43 PM
Flood Advisory #71, which included Jamestown in Berkeley County, has been cancelled. Flood Advisories #70 and #72 remain in effect.
September 11, 2026 at 8:34 PM
Flash Flood Warning for portions of Charleston County, including Adams Run, Jacksonboro, Ashepoo, and Ritter, until 6:30 PM.
September 11, 2026 at 8:28 PM
A new flood advisory stretches from the Charleston/Colleton line through North Charleston and parts of West Ashley up toward Daniel Island and Cainhoy until 6:15 PM. Be cautious as you commute!
September 11, 2026 at 8:17 PM
A new Flood Advisory (#72) is now in effect until 6:15 PM for portions of Berkeley, Charleston, and Dorchester counties, including North Charleston, Hanahan, Ravenel, I-26/526 Interchange, and Naval Weapons Station Charleston.
September 11, 2026 at 8:12 PM
Flood Advisory #70 for portions of Charleston and Dorchester counties has been cancelled. It continues for portions of Berkeley County, including Moncks Corner, until 5 PM.
September 11, 2026 at 8:07 PM
Showers and thunderstorms are propagating east and southward as outflow boundaries push toward the coast and into GA. Be ready for rapidly changing conditions along and east of 17!
September 11, 2026 at 7:45 PM
Another flood advisory in Berkeley County, this one taking in Jamestown, Macedonia, and Alvin until 5PM. Radar estimating 2-3” of rain has fallen along 17-A in Macedonia in the past hour or so with more coming down (though, thankfully, trending lighter).
September 11, 2026 at 7:36 PM
A new Flood Advisory (#71) is now in effect until 5 PM for portions of Berkeley County, including Jamestown.
September 11, 2026 at 7:27 PM