December in Harrisonburg averages a daily high of 7.8°C with nights around -3.6°C. Expect roughly 10.2 wet days totalling 71.4mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Harrisonburg is May–June.
Based on DALE ENTERPRISE, VA US (5.8km), 1995–2024. 30 years of December data.