Few years ago, weather in my hometown was a huge issue. People back then think the average temperature of GuangZhou(my hometown) was going to raise up each year and my hometown was going to be warmer and warmer. However, the data collected for the recent past three years shows that it is not true. The average temperature is actually going down each year.
According to my prediction of the future weather, the summer time would be shorter and the seasons will be more trenchant, which is summer will be warmer and winter will be cooler.
Those are the research I done: