I bought an American version of Apple's mobile phone. Why is the weather forecast inaccurate? What should I do? Temperature report 70. 80 degrees is scary.

Because degree-day in the United States is Fahrenheit. On the other hand, China generally uses degrees Celsius. Fahrenheit (F)= 32+ Celsius (C) × 1.8. It is estimated that the weather forecast software on your mobile phone uses Fahrenheit, so it will be as high as 780 degrees. In fact, it is more than 20 degrees Celsius, less than 30 degrees Celsius. See if your weather forecast software can change the unit to degrees Celsius. If not, download another weather forecast software yourself.