The climate varies from region to region since the country is so huge.
Northeast:
Summers are hot and dry and winters are freezing cold.
North and Central Regions:
Hot summers and cold winters along with frequent short bouts of rain
Southeast:
Plenty of rain and semi-tropical summers along with cool winters.
So as you can see, the weather is varies extremely from season to season.
I will try to explain the climate for each city as best I can.
Source: http://www.statravel.com/china-climate.htm
Northeast:
Summers are hot and dry and winters are freezing cold.
North and Central Regions:
Hot summers and cold winters along with frequent short bouts of rain
Southeast:
Plenty of rain and semi-tropical summers along with cool winters.
So as you can see, the weather is varies extremely from season to season.
I will try to explain the climate for each city as best I can.
Source: http://www.statravel.com/china-climate.htm