Geographical climate of Nandagang wetland

Nandagang wetland is located in the warm temperate zone and semi-humid continental monsoon climate zone. The four seasons are distinct, and the main climate feature is the same period of rain and heat. It is rainy and windy in spring, cool and dry, the temperature rises quickly and the evaporation is large; Summer is hot and humid, and rainy and hot weather occurs from time to time; In autumn, the sky is clear, the wind is slightly cool, the temperature drops rapidly, and the temperature difference between day and night is large; Winter is cold and dry with little snow, accompanied by cold wave and northwest wind. The annual average temperature in this area is 12.7℃, and the annual cooling range has little change, but the annual range is large. The average temperature in January is MINUS 4 degrees. 8 degrees, the hottest in July, with an average temperature of 26. 5 degrees, the frost-free period is 188 days, and the annual total solar radiation is 128. 4 kcal/cm2, with an average annual precipitation of 557. Four millimeters. The average annual precipitation is 604.7mm, and the precipitation in the most special year 1964 1343.5mm, and the precipitation in 1968 is only 247. 1 mm ... The precipitation changes greatly and is unevenly distributed during the year. The annual rainfall is highly concentrated in summer, and the precipitation from July to August accounts for more than 75% of the annual precipitation.