December in Runan averages a daily high of 9.1°C with nights around -0.4°C. Expect roughly 4.2 wet days totalling 19.6mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Runan is April–May.
Based on ZHUMADIAN, CH (30.7km), 1995–2024. 30 years of December data.