Columbia, South Carolina – Sweltering heat and afternoon thunderstorms could turn dangerous for Columbia residents on Tuesday, July 29, as temperatures push toward triple digits and heat indices near 110°F. Commuters and outdoor workers should prepare for extreme conditions and possible delays along I-20 and other major roads after 11 a.m.
According to the National Weather Service in Columbia, a Heat Advisory remains in effect through 8 p.m. Tuesday, with temperatures climbing into the upper 90s and oppressive humidity making conditions feel significantly hotter. Thunderstorms are expected to begin developing after 11 a.m., increasing in strength and coverage into the afternoon and evening. Gusty winds, heavy downpours, and frequent lightning are possible.
Stay indoors during peak afternoon hours if possible. If you must be outside, wear light-colored clothing, take frequent shaded breaks, and stay hydrated. Avoid leaving children or pets in vehicles, even briefly — interiors can reach lethal temperatures in minutes.
Storms could complicate the afternoon commute in Columbia, with potential street flooding and traffic slowdowns near key corridors like I-26, I-20, and U.S. 1. Lightning could also affect power lines or outdoor events.
🔎 Five-Day Forecast for Columbia, SC (Tuesday, July 29 – Sunday, August 3)
- Tuesday, July 29: Showers and thunderstorms likely after 11 a.m. High near 98°F. Heat index values up to 110°F. Chance of rain: 70%.
- Wednesday: Showers and storms mainly between 2 p.m. and 9 p.m. High near 97°F. Chance of rain: 60%.
- Thursday: Showers early, then partly sunny. High around 93°F. Rain chance: 70%.
- Friday: Slightly cooler but still humid. High 90°F with scattered showers and storms. Chance of rain: 70%.
- Saturday: Rain and thunderstorms continue, mostly cloudy. High 83°F. Chance of rain: 70%.
- Sunday, August 3: Storms tapering off. Partly sunny, high near 84°F. Rain chance: 50%.
⚠️ More advisories could be issued if conditions worsen. Stay updated via the NWS and local alerts.
