Charleston Weather Blog

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

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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Tuesday: Much cooler in the wake of the front

/ March 16, 2026 at 9:21 PM

Thankfully, the atmosphere did not live up to its potential on Monday, leaving us to get some much-needed rain without any of the shenanigans that we thought might come with. The cold front is through now, and temperatures will be falling into the mid-30s overnight in the metro, with subfreezing temperatures expected further inland, perhaps in parts of Berkeley and Dorchester counties. Elsewhere, frost shouldn’t be much of a factor given elevated winds continuing overnight.

Temperatures will only peak in the mid-50s on Tuesday despite plenty of sunshine, owing to the potency of the cold airmass.

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