Weather will likely play an important role when you plan your trip to Chengkou County, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually July and August, with an average temperature of 20°C, while the coldest months are January and December, with an average of 3°C. The rainiest months in Chengkou County are July, September, August and June, with each month seeing an average of 258 mm of rainfall.