December in Penza averages a daily high of -3.7°C with nights around -9.3°C. Expect roughly 16 wet days totalling 43.3mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Penza is May–September.
Based on PENZA, RS (7.3km), 1995–2024. 24 years of December data.