Summer-like Heat Grips South Carolina with Temperatures in the 90s
South Carolina is experiencing an early stretch of summer-like heat as a ridge of high pressure dominates the eastern United States. Temperatures across much of the state are expected to climb into the 90s through midweek, with coastal areas slightly cooler in the 80s. Columbia is forecast to reach 93°F (34°C) on Tuesday and 94°F (34.4°C) on Wednesday, while the Upstate will see highs near 90°F (32.2°C). Despite the heat, humidity levels are not expected to be excessive, keeping heat index values close to the actual air temperature. This weather pattern, more typical of late June, is accompanied by sinking air from the Bermuda ridge, which will suppress thunderstorm activity and elevate the UV Index to the 'very high' range. By Thursday, a weakening ridge will allow a frontal boundary to bring increased rain chances and cooler temperatures closer to seasonal norms. 
