The weather forecast for August is 20 12. How many days will it be sunny?

Enter the place name through the 2345 weather website and find out the weather forecast of 15 days. 15 day forecast has "historical weather" in the lower right corner. Click and enter the revised year and month to find the historical weather from 20 1 1 to the present.

Weather forecast (measurement) or meteorological forecast (measurement) is to use modern science and technology to predict the state of the earth's atmosphere in a certain place in the future. Since prehistoric times, human beings have begun to predict the weather and arrange their work and life accordingly (such as agricultural production and military operations). ).

Today's weather forecast mainly uses collecting a large number of data (temperature, humidity, wind direction and speed, air pressure, etc.). ), and then use the current understanding of atmospheric processes (meteorology) to determine future air changes. Because of the chaos of the atmospheric process and the fact that science has not fully understood the atmospheric process today, there will always be some errors in the weather forecast.

brief introduction

Weather forecast is an advance estimation and prediction of weather changes in a certain period in the future. Weather forecast is an important means for meteorological work to serve the national economy and national defense construction. Weather forecast is divided into regional weather forecast and local weather forecast according to the forecast scope. According to the needs of customers, there are daily public weather forecasts and professional weather forecasts.

According to the length of aging, there are short-term, medium-term and long-term weather forecasts. Meteorological offices and stations timely and accurately issue weather forecasts, especially severe weather forecasts, through various channels, which have played an important role in protecting people's lives and property and promoting economic development. At first, weather forecasting technology developed rapidly with the development of telegraph.