Charleston Weather Blog

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

Friday & the weekend: 90s return

/ June 4, 2026 at 10:38 PM

High pressure at the surface and aloft will remain the primary weather driver for Friday and the weekend, with a bit more in the way of heat returning to the area starting Friday. Temperatures Friday start around 60°, warming to around 90° in the afternoon under mostly sunny skies. Dewpoints will remain generally in the 50s before the seabreeze pushes in a little more humid air from the Atlantic later in the day, but even then, they’ll only run in the low 60s with cooling temperatures behind them. It will be one of those rare days where the heat index may actually run slightly cooler than the actual air temperature, in fact, as the relatively dry air will allow sweat to do its thing.

Read more »

Thursday: Lots of sun, a little warmer

/ at 12:19 AM

Another comfortably warm day lies ahead for Thursday as high pressure at the surface and aloft remain the dominant weather features. Temperatures will once again start well on the cool side of normal for this time of year, bottoming out in the upper 50s away from the coast. We’ll warm to the mid-80s in the afternoon, but low-50s dewpoints will help not to make it feel terribly uncomfortable.

Read more »

Rest of the work week: Plenty of sunshine, turning warmer

/ June 2, 2026 at 10:42 PM

Rain is done for a few days as dry high pressure builds down into the area, bringing about comfortable warmth as we get down the home stretch of the work week. It won’t feel like June on Wednesday as temperatures bottom out into the mid-50s away from the locally warmer coastline. Expect highs to peak in the low 80s in the afternoon with nearly unfettered sunshine as deep dry air sets in. Savor the low humidity because we don’t have too many more days like this left for a while!

If the beach is in your plans, be aware of a high risk of rip currents during the day Wednesday due to the ongoing northeast flow. It’s best to stay out of the water on days like this

Read more »

Tuesday: A scattering of storms ahead of another front

/ June 1, 2026 at 11:50 PM

We should see another scattering of showers and thunderstorms on Tuesday in association with a cold front that will make for a rather nice second half of the work week. Temperatures will start in the mid-to-upper 60s, warming to just about 80° in the afternoon as the front pushes further southward and drier air begins to find its way in. Dewpoints should fall nicely late Tuesday into Wednesday, setting up a stretch of spring-like conditions through Friday.

Read more »