July in Lanzhou averages a daily high of 27.4°C with nights around 12.3°C. Expect roughly 11.8 wet days totalling 85.1mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Lanzhou is April–September.
Based on YU ZHONG, CH (35km), 1995–2024. 14 years of July data.