There are sharp distinctions among seasons in Xi'an. Because Xi'an is in the area of Eastern Asia warm temperate zone continental monsoon climate, the climate in Xi'an is warmer and more humid than its surroundings, with an annual average temperature between 6.4 and 13.4℃. The annual average temperature of the urban district and the counties on the plain area is between 13.0 and 13.4℃, and the annual average precipitation of this area is between 537.5 and 1028.4mm. The annual average precipitation of the urban district is 584.9mm.