Climate forecast of Lishui, Zhejiang Province in September this year

Lishui belongs to subtropical monsoon climate zone, with mild climate, warm winter and early spring, long frost-free period and abundant rainfall. The annual average temperature 17.8℃, the average temperature in June is 6.7℃, and the average temperature in July is 28.3℃. The extreme maximum temperature is 43.2℃, and the extreme minimum temperature is-10.7℃. The annual average temperature is high in the east and low in the north. The average temperature in the east and southeast is 17℃ to 18℃, and the average temperature in the north and northwest is 16℃ to 17℃. The extreme minimum temperature ranges from -2℃ to -3℃ in the east and southeast to -6℃ to -7℃ in the north and northwest. Extreme maximum temperature has little difference between east and west.

There is abundant rainfall, with an average annual rainfall of 1568.4 mm, which generally decreases from south to north, ranging from 1350 mm to 2200 mm. In a year, 80% of the precipitation occurs from March to September, with the maximum in the second quarter (669.7 mm) and the minimum in the fourth quarter (165.7 mm).

The annual sunshine hours are 65,438+0,676.6 hours. The sunshine hours are the most in July, reaching 220.9 hours, and the least in February, only 90.8 hours. East wind prevails in the local area, and the annual average wind speed is 0.8m/s-2.2m/s, which decreases from southeast to northwest in terms of regional distribution.

Lishui is also a disaster-prone area, with cold wave, low temperature and rainy weather, strong convection in spring and drought in spring, and freezing weather once every few years; In summer, there are tropical cyclones, heavy rains, strong thunderstorms, high temperatures and other disastrous weather; Although it is sunny in autumn, autumn drought often occurs due to less rain and large evaporation, and typhoons and cold waves will occur in some years; There is little rain in winter and drought in autumn and winter in most years. Cold wave, low temperature and strong wind are also the main disastrous weather in this season. With the global warming and the rapid development of the city, Lishui shows a significant trend of increasing average temperature, decreasing relative humidity, decreasing sunshine hours and obviously decreasing visibility. Extreme weather and climate events frequently occur, with the increase of high temperature and summer heat, frequent droughts, more serious smog, continuous heavy rainfall and intense typhoon intensity, which pose a threat to the harmonious development of Lishui's social economy.