Columbia, S.C. – Thunderstorms are expected to roll through central South Carolina Monday afternoon, bringing heavy rain, lightning, and dangerous heat index values to the Columbia metro area. Commuters along I-20 should prepare for delays and rapidly changing conditions starting after 2 p.m.
According to the National Weather Service in Columbia, a 40% chance of showers and thunderstorms will develop Monday afternoon, with rain and gusty winds expected into the evening. High temperatures will reach 93°F, but heat index values may climb past 102°F due to high humidity and calm morning winds shifting southward at 5 to 7 mph by late day.
Drivers are urged to avoid flooded low-lying roadways and to remain weather-aware during peak afternoon travel. Short bursts of rain and isolated lightning could lead to temporary power outages or tree damage in vulnerable areas. Residents should charge devices and secure outdoor furniture before 2 p.m.
Looking ahead, scattered thunderstorms will continue into Tuesday and Wednesday. Rain chances rise to 60% Tuesday night and remain elevated into midweek. Independence Day on Thursday brings a 30% chance of afternoon storms, with highs near 95°F and typical summer humidity.
Five-Day Forecast (Columbia, SC):
- Monday (June 30): High 93°F, PM storms (40%), heat index up to 102°
- Tuesday: High 92°F, slight storm chance (30%) before 2 p.m.; 60% chance Tuesday night
- Wednesday: High 89°F, 60% chance of storms
- Thursday: High 95°F, 30% storm chance
- Friday (4th of July): Mostly clear, high 93°F, dry end to the workweek
