Signs in weather forecast indicating wind, rain and high temperature.

Legend of wind force in weather forecast

Legend of rainfall in weather forecast

In weather forecast, temperature is directly represented by numbers, and the high temperature is generally above 3 degrees Celsius, as shown in the following figure.

Weather forecast is to predict the weather conditions in a certain period in the future by applying the law of atmospheric change according to the current and recent weather situation. It is based on the analysis of satellite cloud images and weather maps, combined with comprehensive research on meteorological data, terrain and seasonal characteristics, and mass experience. For example, the satellite cloud images of China's Central Meteorological Observatory were taken from meteorological satellites such as Fengyun-1. Using satellite cloud photos for analysis can improve the accuracy of weather forecast. Weather forecast is usually divided into three types: short-term weather forecast (2 ~ 3 days), medium-term weather forecast (4 ~ 9 days) and long-term weather forecast (more than 1 ~ 15 days). CCTV broadcasts mainly short-term weather forecasts every day.