June in Barnaul averages a daily high of 24.6°C with nights around 12.1°C. Expect roughly 11.3 wet days totalling 56.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Barnaul is May–September.
Based on BARNAUL, RS (16.1km), 1995–2024. 27 years of June data.