Spartanburg, S.C. – Thunderstorms are expected to develop across Spartanburg on Tuesday afternoon, bringing gusty winds, lightning, and a dangerous heat index that could make it feel like 100°F. The National Weather Service has issued a weather alert for scattered storms, particularly after 3 p.m., which may cause disruptions and make conditions feel steamy.
Weather Hazards and Timing
Showers and thunderstorms will likely begin after 3 p.m. Tuesday, especially along I-85 and surrounding communities. Rainfall could reach up to a quarter inch in isolated areas, creating slick roads and reduced visibility, which could make driving hazardous during the evening commute.
Drivers on major routes like I-85 and U.S. 221 should remain alert, especially during peak travel hours. Patchy fog is also possible early in the morning, prior to the storms moving in.
Afternoon temperatures are expected to reach 92°F, but the heat index could climb as high as 100°F, making conditions even more uncomfortable. Winds from the southeast may increase slightly as the storms develop, adding to the summer feel.
Nighttime and Extended Forecast
By Tuesday night, thunderstorms remain possible with a 60% chance of rain before 2 a.m. Though the rain chances will decrease, scattered thunderstorms and slightly cooler highs in the low 90s are expected on Wednesday and Thursday.
Five-Day Forecast: Spartanburg, SC (July 15–20)
Tuesday: Thunderstorms likely after 3 p.m.; high 92°F (feels like 100°F).
Wednesday: Showers likely before 2 p.m.; high 91°F.
Thursday: Scattered afternoon thunderstorms; high 90°F.
Friday: Mostly sunny with a 30% chance of storms after 3 p.m.; high 93°F.
Saturday–Sunday: Continued storm chances (30–40%) each day; highs mid-90s.
Expect lingering humidity and pop-up storms through the weekend. Be weather-aware, and stay updated with midweek alerts from the National Weather Service.
