Columbia, S.C. – Scorching heat and isolated storms will make Sunday a potentially dangerous day outdoors across South Carolina, including Columbia. Heat index values could soar as high as 105°F, and scattered thunderstorms are expected after 2 p.m., bringing localized downpours and strong gusts.
According to the National Weather Service in Columbia, Sunday’s high will climb to 95°F with a 40% chance of afternoon storms. Winds will shift from the southwest at 5–10 mph, increasing humidity and storm potential. Lightning, heavy rain, and sudden wind gusts could disrupt travel on I-20 and US-378 by late afternoon.
Storm chances continue into Sunday night, especially before 8 p.m., with temperatures cooling to around 74°F. While Monday brings a brief return to sun and heat, thunderstorms make another appearance Monday night and linger into Tuesday. Tuesday’s storm potential is higher, with a 60% chance of thunderstorms after 2 p.m.
With Independence Day approaching, attention turns to midweek conditions. Wednesday and Thursday are expected to be stormy, possibly affecting fireworks events or travel plans. The 4th of July itself may see scattered afternoon storms, though skies could clear enough for evening activities.
🌤️ Six-Day Outlook for Columbia, SC:
- Sunday (June 29): 95°F, heat index near 105, 40% chance of PM storms
- Monday (June 30): 94°F, mostly sunny, slight storm chance (40%) by evening
- Tuesday (July 1): 93°F, 60% chance of storms after 2 p.m.
- Wednesday (July 2): 88°F, 70% chance of PM thunderstorms
- Thursday (July 3): 92°F, 50% chance of afternoon storms
- Friday – 4th of July: 96°F, 30% chance of storms, partly sunny with evening clearing possible
