Charleston Weather Blog

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

The week ahead: Strong storms possible Monday afternoon, then a very warm stretch to start April

/ March 30, 2025 at 10:47 PM

March will conclude on an unsettled and stormy note as a front moves through the area late Monday, bringing with it the risk for strong to severe thunderstorms as a squall line moves by in the late afternoon/early evening hours. It’ll be a very warm end to March, with highs peaking in the low 80s after a start in the low to mid-60s. There should be some breaks in the clouds, and with that, decent instability should develop. The shear is not off the charts, but with the instability and some pockets of drier air aloft, enough is there to support a scattered severe threat with damaging winds the primary concern. A tornado or two on the leading edge of the line can’t be totally ruled out, nor can some hail as well. Timing for thunderstorms is generally in the 4-8PM range from west to east across the metro, so be alert for potential issues during the commute. (The school day should be fine, though after-school stuff might get iffy if storms move a little faster than forecast.)

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Weekend forecast: Saturday’s quiet, some showers Sunday

/ March 28, 2025 at 11:32 PM

High pressure continues to gradually lose its grip on our weather over the weekend as the next storm system approaches the area. We do get a rain-free day in on Saturday, though, with a mild but mostly cloudy day. We start Saturday in the mid-to-upper 50s, warming to the upper 70s in the afternoon. Southerly winds will generally run around 5-10 MPH.

Shower chances increase for Sunday as some mid-level energy aloft moves its way into the area ahead of the approaching cold front, stirring up some scattered showers and maybe some thunderstorms at times perhaps throughout the day. It won’t be a washout, but you’ll want to keep an eye on the sky as some rain and thunder will be possible from time to time. It’ll be a rather warm day, with lows around 60° warming to the low 80s in the afternoon.

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