Planning for the weather is a good way to make your trip to Hanzhong relaxing and enjoyable, especially when you’re splurging. 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.