Climate trend, temperature and rain in Weihai this summer.

Weihai belongs to the continental climate of north temperate monsoon, with obvious seasonal changes and monsoon advance and retreat. Compared with inland areas at the same latitude, it has the characteristics of abundant rainfall, moderate annual temperature and mild climate. The continental degree of Weihai is 54. 1%. Being close to the Yellow Sea and regulated by the ocean, Weihai has the characteristics of maritime climate, such as cool in Leng Xia in spring, warm in autumn and warm in winter, small temperature difference between day and night, long frost-free period, strong wind and high humidity. In summer (June-August), due to the regulation of the ocean, the temperature is low. June-July is 3-4℃ lower than inland latitude, and August is 65438 0℃ lower. The cool and pleasant climate makes Weihai a famous summer resort. The highest temperature is in August, and the extreme highest temperature in the whole year appears in July and August. With the strengthening of the Pacific high northward, the summer monsoon begins, mostly with the south to southeast wind of grade 3-4, which is beneficial to warm and humid air northward, so there is much precipitation and high humidity, and the precipitation accounts for 59% of the whole year. The flood season begins in late June and early July and ends in early September. Heavy rains are concentrated in July, August and early September, and frequent heavy rains often lead to floods. However, in some years, due to the control of the Pacific high, Shandong Peninsula is stable and inactive, resulting in high temperature, high humidity and sultry weather, resulting in short-term drought. Due to the guidance of atmospheric circulation, typhoons in the Pacific Ocean move northward, often causing heavy rain and windy weather.