December in Rocky Mount averages a daily high of 13.8°C with nights around 2.4°C. Expect roughly 7.4 wet days totalling 86.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Rocky Mount is April–May.
Based on ROCKY MOUNT 8 ESE, NC US (11.1km), 1995–2024. 12 years of December data.