About Longnan, Gansu's Climate & Weather History

Longnan is a city of approximately 85,800 people in Gansu, China. Located in the China Standard Time zone at 33.4°N latitude.

In 2025, Longnan recorded an average annual temperature of 59°F. The hottest temperatures reached 95°F in July; the coolest were 20°F in January. Total precipitation for the year was 32 inches, with the wettest month being September. Snowfall for the year totaled approximately 5 inches.