December in Gastonia averages a daily high of 12.8°C with nights around 1.1°C. Expect roughly 8.9 wet days totalling 100mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Gastonia is April–May.
Based on GASTONIA, NC US (4km), 1995–2024. 28 years of December data.