Located in temperate zone, Jiayuguan has a continental dessert climate with annual average temperature ranging from 6.7℃ to 7.7℃. The city enjoys about 8000 hours of sunlight annually. January is the coldest month with the lowest temperature being -28.6℃. Temperature soars up in summer and typically peak in July with temperature up to 38℃.
The best time to visit is between May and October. In mid-July, Jiayuguan International Gliding Festival will be held with wonderful performances and competitions. October is the right time to climb the Qiyi Plateau Glacier (July 1st Glacier).