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last updated at 2:45 AM on September 17, 2026

Charleston Weather Discussion

The latest forecast and discussion for the Charleston, SC metro area

Thursday: Mostly sunny skies continue

/ September 16, 2026 at 10:21 PM

Another warm mid-September day lies ahead for Thursday as high pressure remains the dominant weather feature at the surface and aloft. We’ll get off to another pleasant start with lows in the upper 60s warming to the upper 80s in the afternoon with dewpoints in the mid-to-upper 60s away from the coast, where dewpoints will settle in the 70-72° range. Dry air in the atmospheric column will make for mostly sunny skies, with just a few passing clouds expected.

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Charleston Area NWS Forecast

Forecast for Charleston updated at 2:12 AM on September 17, 2026