If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Hanzhong: The hottest months are usually July and August with an average temp of 73°F, while the coldest months are January and December with an average of 43°F. The rainiest months in Hanzhong are July, September, August, and June, with each month seeing an average of 8 inches of rainfall.