Traditional Culture Encyclopedia - Weather inquiry - What does the weather forecast mean by eight degrees ahead and eighteen degrees behind?

What does the weather forecast mean by eight degrees ahead and eighteen degrees behind?

Minimum temperature and maximum temperature. The weather forecast is eight degrees ahead of schedule and eighteen degrees behind schedule. According to the display rules, the lowest temperature and the highest temperature are indicated. Weather forecast is to analyze and predict the future weather in a certain area according to the basic theory and technology of atmospheric science, and it is an important means for atmospheric science to serve citizens' economic construction and people's lives.