Tai'an City belongs to the continental half humid monsoon climatic area of the north warm temperate zone, and it has a clear distinction between the seasons. It is delightful in all seasons with the sunshine and climate synchronization, and the rainfall and heat in the same season. It is dry and windy in spring, hot and rainy in summer, warm and fresh in autumn, and cold and little snow in winter.
The average total amount of the solar radiation of the city is 121.58 kilocalorie/cm2 in many years, with the annual amount changes within 112 to 131 kilocalorie/cm2.
The average annual temperature of Tai'an City is 12.9℃. The average highest temperature is 26.4℃ in July of the year, while the lowest is in January with 2.6℃ below zero in average. The average annual precipitation of the city is 697mm. Being affected by the monsoon climate, the annual precipitation changes greatly.