Spartanburg, South Carolina – Scorching temps and a rising thunderstorm risk will grip Spartanburg by late Sunday, creating dangerous driving and outdoor conditions. With heat index values pushing 101° and storm chances increasing after 5 p.m., residents and I-26 commuters should brace for rapid weather changes.
According to the National Weather Service in Greenville-Spartanburg, a 30% chance of late-day showers and thunderstorms will arrive Sunday evening, following mostly sunny skies and highs near 96°. Light northwest winds offer little relief, and high humidity will make the air feel significantly hotter.
Localized storm cells could cause brief downpours and lightning, especially near major routes like I-26 and I-85. Monday follows a similar pattern, with another 30% storm risk after 3 p.m. and highs around 95°. By Tuesday, conditions grow more unstable—storm chances jump to 60%, with heavy rain possible during the late afternoon and early evening.
Residents are urged to limit outdoor activity during peak heat, stay hydrated, and avoid travel during evening thunderstorms. Charging devices and preparing for brief outages is also advised.
Storm activity persists through Thursday, with daily rain chances ranging between 30% and 60%, while temps stay hot and muggy. Heat remains a key concern alongside lightning hazards.
⚠️ Warnings remain in effect through midweek. Stay alert for additional advisories.
🔎 5-Day Forecast for Spartanburg, SC
Sunday (High 96°) – Sunny, then 30% chance of p.m. thunderstorms. Heat index up to 101°.
Monday (High 95°) – Mostly sunny, 30% chance of storms after 3 p.m.
Tuesday (High 92°) – Partly sunny, 60% chance of storms mainly after 4 p.m.
Wednesday (High 90°) – 60% chance of storms in the afternoon, possibly severe after 5 p.m.
Thursday (High 91°) – Mostly cloudy, 60% chance of storms and showers throughout the day.
