Why does precipitation vary across Jilin province?

Precipitation in Jilin province varies significantly due to the region's diverse topography and its position within a transitional climatic zone.

The distribution of rainfall follows a distinct geographic pattern:

• Southeast: Precipitation is highest in the Changbai Mountains area, where annual levels exceed 40 inches (1,000 mm).1
• Central: Areas such as Changchun experience moderate levels, with a mean annual precipitation of approximately 25 inches (630 mm).1
• West: Precipitation decreases toward the west, with the Northeast Plain receiving only about 16 inches (400 mm) annually.1

Across the province, more than 80 percent of this precipitation occurs during the five warm months from May to September.1