South Carolina starts the morning calm and mild, with patchy fog fading and soft light reflecting off damp pavement. That quiet feel won’t hold. Changes arrive Sunday, bringing rain to the Upstate before colder air settles in just as year-end travel ramps up toward 2026.
According to the National Weather Service, clouds increase across the Greenville–Spartanburg area Sunday as moisture spreads north. Afternoon rain chances rise, with highs reaching the upper 50s. Conditions remain warm enough for rain only, but wet roads could slow traffic along I-85, I-26, and Highway 29 during peak travel hours.
Sunday evening stays unsettled. Light rain lingers at times, and winds begin shifting as a weak front moves through. Visibility may drop briefly during showers, especially on rural highways and higher elevations near the North Carolina line.
The bigger shift arrives Monday. Temperatures rebound briefly, with highs climbing into the mid-60s, but that warmth fades quickly after sunset. Cooler air pours in overnight, dropping lows near the upper 20s by Monday night. Any leftover moisture could freeze, creating slick spots on bridges and shaded roads.
By Tuesday, winter feels more established. Sunshine returns, but highs struggle to reach the mid-40s. Early mornings stay cold, with frost likely across the Upstate. Drivers should watch for black ice during predawn travel, especially in low-lying and wooded areas.
Looking ahead, New Year’s Eve on Wednesday trends dry but chilly. Highs reach near 50, then temperatures fall quickly after sunset as 2026 approaches. While snow is not expected locally, winter patterns remain active across the eastern U.S., keeping cold air close.
Plan ahead if traveling Sunday evening or early next week. Conditions may change quickly once temperatures drop. Are you noticing slick spots or fog where you live?
Five-Day Weather Outlook: Greenville–Spartanburg, SC
- Sunday: Chance of rain; high near 58
- Monday: Chance of rain early, warmer; high near 66
- Tuesday: Sunny and cooler; high near 46
- Wednesday (New Year’s Eve): Sunny; high near 50
- New Year’s Day: Mostly sunny, cool; high near 53
