The geographical environment of Chunhua County

The climate is warm temperate continental monsoon climate. The annual average temperature is 9.8℃, the average temperature in January is -4.3℃, the extreme minimum temperature is -21.3℃, the average temperature in July is 23.1℃, and the extreme maximum temperature is 39.4℃. The average annual sunshine is 2372.7 hours, the annual average daily temperature is above 0℃ for 269 days, and the annual average daily temperature is above 5℃ for 220 days. The annual average active growth period of crops is 173 days, and the frost-free period is 183 days. The average annual precipitation is 600.6 mm, with July to September accounting for 53% of the annual precipitation. The maximum amount of extreme precipitation was 822.6 mm in 1964, and the minimum amount was 409.5 mm in 1977. The annual precipitation variability is 14%, and waterlogging is rare, but droughts often occur. Disastrous weather includes hail, frost, cold waves, hot and dry winds, etc.