January in Yartsevo averages a daily high of -4°C with nights around -9°C. Expect roughly 18.3 wet days totalling 48.6mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Yartsevo is May–September.
Based on SMOLENSK, RS (53.4km), 1995–2024. 25 years of January data.