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last updated at 1:50 PM on March 18, 2026

Charleston Weather Discussion

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

Rest of the work week: Frosty start Wednesday, but warming thereafter

/ March 17, 2026 at 11:00 PM

Quiet weather continues for the rest of the work week with high pressure in control. Wednesday gets off to a very chilly start with Freeze Warnings in effect as temperatures fall into the low 30s in the metro with perhaps some upper 20s further inland. Where temperatures don’t fall below freezing, frost will be a concern with mostly clear skies, so everyone should protect plants. Wednesday will remain much cooler than normal for mid-March with highs only peaking in the upper 50s. Clouds will be on the increase throughout the day but there are no concerns for any precipitation.

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Charleston Area NWS Forecast

Forecast for Charleston updated at 10:32 AM on March 18, 2026