December in Novoaltaysk averages a daily high of -8.9°C with nights around -17.7°C. Expect roughly 16.1 wet days totalling 32mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Novoaltaysk is May–September.
Based on BARNAUL, RS (28.2km), 1995–2024. 24 years of December data.