July in Jiayuguan averages a daily high of 30.2°C with nights around 15.8°C. Expect roughly 6 wet days totalling 19.7mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Jiayuguan is April–June.
Based on JIUQUAN, CH (17.5km), 1995–2024. 24 years of July data.