Charleston Weather Blog

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

Weekend forecast: Warm, muggy, but sunny post-Helene

/ September 27, 2024 at 10:36 PM

Quieter weather is in store for this weekend (though one could argue the bar is very low for that) in the wake of Helene. It’ll stay warm and muggy, though, as we head down the home stretch of September.

Saturday starts in the upper 60s to around 70°, warming to the mid-80s in the afternoon as a brief shot of cooler and drier air gets us off to a relatively cooler start. It’ll still feel closer to 90°, though, when factoring in dewpoints around 70-71°. The airmass modifies quickly, though, and by Sunday, we’ve got a late summer-ish day with lows in the low 70s warming to the upper 80s that’ll feel more like the mid-90s in the afternoon.

We have a few more days of the muggy airmass before another front sweeps through for the middle of next week, cooling us off pretty nicely as we head through the first week of October.

Rest of today: Clouds and winds diminishing

/ at 12:22 PM

Improving weather is expected this afternoon into this evening as Helene continues to pull away from the area. Winds remain rather gusty — as of noon, a 48 MPH wind gust was reported at the airport — but will diminish as the afternoon wears on. It’ll stay warm and humid, with highs topping out in the low 80s as sun begins to peek through the cloud canopy. We’ll cool to around 70° overnight on our way back to the mid-to-upper 80s on Saturday.

Some housekeeping: The Flash Flood Warning that was in effect for the Charleston metro area, including downtown, has expired. The Tropical Storm Warning remains, but I expect that to be dropped by the 5PM advisory. And yes, the tornado threat has ended.

More on the weekend with this evening’s forecast post as the routine gets back to regular order. Thank you all again for your trust — it’s an honor to help guide y’all through these haranguing meteorological situations!