Charleston Weather Blog

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

Thursday: Another chilly start, but a subtly warmer afternoon

/ February 7, 2024 at 6:48 PM

We have another chilly start ahead on Thursday as lows drop to the low-to-mid-30s across much of the metro one more time as high pressure moves overhead. We’ll see mostly sunny skies for a fair bit of Thursday before high pressure begins to slip further offshore and cloud cover starts to increase later in the day. Temperatures will show signs of a subtle warming trend as we top out in the low to mid-60s Thursday afternoon, a few degrees warmer than we have been the past couple days. Overall, it’ll end up being a fairly climatologically typical February day after the cooler-than-normal start.

Read more »

Rest of the work week: Winds diminishing, turning warmer

/ February 6, 2024 at 6:51 PM

We’re just about done with the chillier weather for a few days, but first, Wednesday awaits. Lows on Wednesday should flirt with freezing, and continued breezy northerly winds will help it feel like the mid-20s. You’ll want to dress in layers to start, though you should be able to shed a layer or two later in the day as temperatures approach 60° and winds, mercifully, continue to die down.

There is a risk for some minor coastal flooding with the 5:33am high tide, though I wouldn’t be surprised to see the forecast of 7.3-7.5′ revised downward given the past two mornings have come in lower than expected. (Watch this be the one time the tide does exactly what the evening blog post says it will.) In any event, any flooding issues should be resolved before the bulk of the commute, but if you are an early commuter and downtown is in your plans, keep an eye out for possible flooded or closed roads.

Read more »

Tuesday: Clouds and rain are gone, but chill and wind remain

/ February 5, 2024 at 7:40 PM

Showers have ended and cloud cover will diminish overnight, yielding a sunny Tuesday — in stark contrast to the dreariness that was Monday. However, high pressure trying to build in from the west will help to keep the gradient pinched as low pressure remains offshore, keeping north to northeast winds elevated throughout the day. Temperatures will start in the upper 30s, but the wind chill will make it feel more like 30°, so dress appropriately in the morning. We’ll warm only to the mid-to-upper 50s despite the sunshine, too.

The other issue for Tuesday will be the risk for some minor to moderate coastal flooding very early Tuesday morning. High tide around 4:32am is forecast to reach between 7.5-7.7′. While we fell just short of coastal flood criteria Monday morning, it certainly seems more likely that we’ll achieve flood stage on Tuesday. So, if you have early travels that take you downtown, be ready to reroute around flooded roads.

Read more »

The week ahead: Stormy start, then turning cool and quiet

/ February 4, 2024 at 11:57 PM

The first full week of February gets off to a stormy start as strong low pressure affects the area, particularly in the morning. We’re looking for the potential for some coastal flooding early in the day, and this combined with heavy rainfall could cause flooding problems across downtown Charleston, especially around high tide a little after 3:30am. A Coastal Flood Advisory is in effect from 2-6am for the salt water flooding threat; if that heavy rain does coincide, additional flood advisories for land-based areas would be needed. Rain does slowly taper off as Monday goes along, but we stay on the chilly side as breezy northeasterly winds blow in. This keeps highs capped to the mid-50s after an upper 40s start.

Read more »

Sunday: Turning breezy and unsettled as a storm system approaches

/ February 3, 2024 at 9:32 PM

Our run of quiet weather comes to a brief pause starting Sunday as a storm system approaches the area. We’ll see cloud cover head up throughout the day, and showers will be increasingly possible as we get into the later afternoon and evening hours. Expect temperatures to start in the upper 30s to around 40°, with highs topping out around 60°. Northeasterly winds around the storm system will be increasing as the day goes on, and it could be a bit gusty by afternoon, so keep that in mind as well as you head out and about.

Read more »