The geographical environment of Chunhua county

The climate belongs to warm temperate continental monsoon climate. The annual average temperature is 9.8℃, 1 month average temperature is 4.3℃, the extreme minimum temperature is -2 1.3℃, the average temperature in July is 23. 1℃, and the extreme maximum temperature is 39.4℃. The annual average sunshine is 2372.7 hours, and the annual average daily temperature is above 0℃ for 269 days and above 5℃ for 220 days. Average annual crop active growth period 173 days, frost-free period 183 days. The average annual precipitation is 600.6 mm, accounting for 53% of the annual precipitation from July to September. Extreme precipitation 1964 is 822.6 mm at most, and 1977 is 409.5 mm at least. The annual precipitation variability is 14%, and there are few floods, but droughts often occur. Catastrophic weather includes hail, frost, cold wave and dry hot wind.