Columbia, SC – A migrating heat dome is set to drive temperatures into the low to mid-90s across South Carolina within days, bringing intense early-season heat and repeated storm chances that could disrupt travel and daily routines through early April.
According to the National Weather Service Climate Prediction Center, a 70 to 80 percent probability of above-normal temperatures will dominate South Carolina from April 3 through April 9 as strong high pressure expands across the Southeast. Highs in Columbia, Charleston, and Greenville are expected to run 10 to 20 degrees above seasonal averages, with overnight lows remaining warm and humid.
The heat dome strengthens across the Deep South, with some inland areas approaching the mid-90s, increasing the risk of heat-related illness and higher energy demand. South Carolina sits within a moisture-rich zone along the eastern edge of this system, allowing heat and humidity to fuel repeated rounds of showers and thunderstorms.
Rain chances increase statewide, especially during afternoon and evening hours. Heavier downpours could impact major routes including I-26, I-95, and I-20, leading to reduced visibility and water-covered roads during peak travel times.
Residents are urged to stay hydrated, limit strenuous outdoor activity during peak heat, and avoid driving through flooded roadways.
This pattern is expected to persist through April 3–9, with additional advisories likely as storm timing and rainfall totals become more defined.
