July in Smolensk averages a daily high of 23.9°C with nights around 13.4°C. Expect roughly 12.9 wet days totalling 90.7mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Smolensk is May–September.
Based on SMOLENSK, RS (3.3km), 1995–2024. 24 years of July data.