September in Chapel Hill averages a daily high of 27.7°C with nights around 16.4°C. Expect roughly 8.8 wet days totalling 140.3mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Chapel Hill is April–May.
Based on CHAPEL HILL 2 W, NC US (2.2km), 1995–2024. 30 years of September data.