Though weather is just one factor, it can really affect your travel plans, especially if you are planning a longer stay in Zhanyi County. The hottest months are usually May and July with an average temp of 66°F, while the coldest months are January and December with an average of 48°F. The rainiest months in Zhanyi County are June, July, August, and September, with each month seeing an average of 8 inches of rainfall.