Average temperature in winter and summer in Huzhou.

Huzhou is located in the mid-latitude zone and belongs to the East Asian monsoon climate zone. The general characteristics of climate are: obvious monsoon and distinct four seasons; Rain and heat in the same season, abundant precipitation; Synchronous light and temperature, more sunshine; Mild climate and humid air; The height difference of topographic relief is large, and the vertical climate is obvious.

First, the monsoon is obvious and the four seasons are distinct.

The city is located in the subtropical monsoon prevailing area, with obvious monsoon and distinct four seasons. Affected by the advance and retreat of winter and summer monsoon, northwest wind prevails in winter, with dry and cold climate, and southeast wind prevails in summer, with hot and humid climate. This alternating transformation of winter and summer monsoon has formed obvious seasonal changes. Generally, the average climate temperature is below 10℃ in winter, above 22℃ in summer and between 10 ~ 22℃ in spring and autumn. The four seasons in our city are characterized by long winter and summer and short spring and autumn. Winter usually begins in the late month of 1 1 and ends in the middle and late March of the following year. Summer usually begins in late May and ends in the middle and late September. Different seasons have different climates.

Spring: The temperature starts to rise, but it is unstable, with great temperature fluctuation and weather change. There is strong cold air in early spring, resulting in "late spring cold" and late frost. From April to mid-May, the rainfall increased obviously, and there was often continuous rainy weather. Continuous low temperature and rainy weather will affect the normal growth of early rice seedlings, and warm and humid weather with little rain and light will easily induce the epidemic of wheat scab. From late May to early June, there was less precipitation and the weather was relatively fine. It is beneficial to harvest spring flowers and make early rice turn green and tiller. In a few years, the spring rain will end late, the plum rain will come early, the spring rain and the plum rain will continue, and the rainy time will be long, which will seriously affect agricultural production.

Summer: It is the season with the most precipitation in the whole year. The weather in early summer is hot, humid and rainy. Summer is sunny, hot, with little rain and high temperature, which is the hottest time of the year. This period is also the period when the annual extreme maximum temperature appears. During this period, except for typhoons and local thunderstorms, there was less precipitation, and summer droughts often appeared.

Autumn: It's rainy in the early stage and Qiu Qiu in late autumn. September is a rainy period in early autumn, with a lot of precipitation and great precipitation intensity, mainly typhoon rainstorm precipitation. Typhoons and rainstorms can easily cause floods. /kloc-In October/October, due to the strengthening of cold air in the north, frequent activities, temperature drop, precipitation decreased obviously, the weather was clear, the temperature was high during the day, the radiation cooling at night was fast, and the diurnal range was large, which was beneficial to the filling and fruiting of late rice. In cold years, the lowest temperature can drop below 4℃ from the end of1October to the beginning of1October, and the first frost appears.

Winter: The weather is cold and dry, which is the season with the lowest temperature and the least precipitation in a year. The weather in early winter is dry and cold, with less rain and snow and more frost. Under the influence of strong cold air, the minimum temperature can be reduced to -5 ~ 6℃. Midwinter is the coldest period in the whole year, and the extreme temperature can generally reach-7 ~ 9℃, with a few years below-10℃. The end of winter is the period with the least sunshine in the whole year. The weather is cold and the temperature rises slowly. Under the influence of strong cold air, the weather that is warm and cold at first occurs from time to time.

Second, it is rainy and hot in the same season, with abundant precipitation.

The city is rich in precipitation, the annual precipitation is about 1300mm, and the annual precipitation is mainly concentrated in spring rain, plum rain and autumn rain.

In spring, with the temperature rising, the precipitation gradually increases. April to May is the spring rain period. Throughout the year, the precipitation in two months accounts for about 20% of the whole year. At this time, it is the stage of spring sowing and seedling raising, and the water demand of crops has also increased.

Summer is the season with the highest temperature and the most precipitation in a year. Mid-June to early July is the key growth period of early rice, which coincides with the rainy season and has more rainfall. In some years, early rice sheath blight and rice blast spread due to excessive precipitation and suitable temperature and humidity.

In autumn, the temperature drops gradually. September is the autumn rain period, and the amount of autumn rain in many years exceeds the water demand of late rice in the same period. Since then, with the invasion of cold air from the north to the south, the temperature has dropped rapidly since 10, and the precipitation has decreased significantly. From the end of 10 to the end of 1 1 month, the crop water demand is greatly reduced.

Winter has the least precipitation and the lowest temperature. During this period, the spring flower crops are in the wintering stage, and the water demand is generally less.

During the whole growth period of warm-loving crops, the precipitation in each season in our city basically increases with the increase of temperature and decreases with the decrease of temperature, and the rain and heat are basically the same season, which is beneficial to the growth and development of warm-loving crops. However, due to the change of monsoon intensity and the advance and retreat every morning and evening, the interannual variation of precipitation is relatively large. Too much or too little precipitation will lead to floods or droughts.

Third, the light and temperature are synchronized, and there is more sunshine.

Solar radiation is one of the main factors that form climate and an important energy source for crop growth. The amount of solar radiation depends not only on geographical latitude and solar height, but also on meteorological conditions such as atmospheric transparency and cloud cover. In a year, the distribution of solar radiation is strongest in summer and weakest in winter, which is basically consistent with the annual change of temperature. In winter, the amount of solar radiation is small and the temperature is low. Since March, the amount of solar radiation has increased month by month and the temperature has risen. June is in the rainy season, with more rain and less sunshine, and the amount of solar radiation is relatively reduced. There are many sunny days in July and August, with the strongest solar radiation and high temperature. The amount of solar radiation in August is the highest in the whole year. Since September, the direct point of the sun has gradually moved southward, and the amount of solar radiation has decreased obviously month by month. The solar radiation in December is the least in the whole year. Due to the increase of cold air activity, the temperature is also decreasing. It can be seen that the change of solar radiation and temperature is consistent, and the synchronization of light and temperature is conducive to the full use of light energy.

The annual sunshine hours in this city are about 20,000 hours, which is one of the areas with more sunshine in our province. Due to the different climate and changeable meteorological conditions, the sunshine hours vary greatly every year.

Fourth, the climate is mild and the air is humid.

The average annual temperature in our city is 16.0℃, which belongs to mild climate type. Summer is the hottest and winter is the coldest in a year. However, the high temperature in summer does not last long, and the high temperature above 39℃ only appears in a few years. The duration of low temperature in winter is short; There is no shortage of precipitation all year round, as well as the water regulation and humid air in Taihu Lake. To sum up, our climate is hot in Leng Xia in winter, with moderate temperature and mild and humid climate all year round, which is suitable for the growth of various crops.

Fifth, the elevation difference is large and the vertical climate is obvious.

Our city has a large mountainous area, large topographic relief and obvious vertical climate difference. This difference is first manifested in the distribution of seasons. Generally, height increases, summer becomes shorter and winter becomes longer. Therefore, the mountainous areas are characterized by long winters and short summers. Therefore, the mountainous areas of our city are experiencing the changes of temperature, coolness and coldness from low to high, and there are different seasons in the same place. Even at the same height, there will be local climate differences due to the differences in slope direction, slope and topography such as peaks, valleys, hills and basins. Thirdly, there are abundant precipitation resources in mountainous areas, and the precipitation generally increases with the elevation. The rich and diverse mountain climate provides a wide range of ecological conditions for many creatures, and provides favorable agricultural climate conditions for developing diversified economy and invigorating mountain economy.

To sum up, our city is rich in climate resources, which is conducive to the development of rice, wheat, oil, mulberry, fish, tea, bamboo, fruit, wood and other planting and breeding industries. Because the monsoon advances and retreats in the morning and evening, and the intensity is different every year, the climate in this city changes greatly from year to year, and disastrous weather occurs from time to time. In particular, meteorological disasters such as floods, droughts, typhoons, hail and lightning have a great impact on our city.