Spartanburg, S.C. – South Carolina is enjoying another bright summer morning, but the quiet weather won’t last all week. Sunshine is pushing temperatures higher across the Upstate, and the atmosphere will become increasingly unstable over the next several days. Today offers the best opportunity for outdoor plans before thunderstorms become much more widespread by the middle of the week.
According to the National Weather Service in Greenville-Spartanburg, Monday stays sunny with a high near 93 degrees as light southwest winds develop during the afternoon. Only a slight chance of a late-night thunderstorm is expected today, but the pattern changes quickly beginning Wednesday as deeper moisture and an approaching weather system increase rain and storm coverage across the region.
Travel conditions remain favorable through most of Monday, although anyone driving late tonight should stay alert for isolated showers. By Wednesday afternoon, commuters along Interstate 85, Interstate 26, U.S. Highway 29 and U.S. Highway 221 could encounter rapidly changing conditions as showers and thunderstorms develop. Brief heavy rainfall, lightning and localized ponding on roads may slow travel during the evening commute.
Tuesday stays mostly sunny with another hot afternoon and highs near 93 degrees. Southwest winds may gust as high as 21 mph, adding to the summer feel before the wetter pattern arrives. Rain chances increase to 60% Wednesday, with thunderstorms becoming likely after 4 p.m. The chance of rain climbs to 80% Wednesday night, when repeated rounds of showers and thunderstorms are expected. While widespread severe weather is not specifically forecast for Spartanburg, a few storms could become strong with gusty winds, frequent lightning and localized heavy rainfall. As with many summertime systems, an isolated tornado cannot be completely ruled out, but it is not the primary concern.
Thursday remains unsettled with showers likely and a 60% chance of rain, keeping wet roads possible through much of the day. Temperatures cool noticeably into the lower 80s before another chance of showers and thunderstorms continues Friday.
Longer-range outlooks continue to point toward above-normal temperatures returning later next week after this midweek cooldown, signaling that the summer heat is far from over.
Five-Day Forecast for Spartanburg, South Carolina
- Monday: Sunny. High 93°F. Slight chance of thunderstorms late tonight. Low 74°F.
- Tuesday: Mostly sunny. High 93°F. Slight chance of thunderstorms Tuesday night. Low 75°F.
- Wednesday: Chance of showers and thunderstorms after 4 p.m. High 90°F. 60% chance of rain. 80% chance Wednesday night. Low 70°F.
- Thursday: Showers likely with thunderstorms possible. High 83°F. 60% chance of rain. Low 68°F.
- Friday: Chance of showers and thunderstorms. High 82°F. 40% chance of rain.
