Why is the weather forecast data different from the actual data?

On the one hand, the weather forecast is only a forecast, on the other hand, everything is changing and developing. At the same time, the forecast is the statistical result of regional data in meteorological theory, but in fact:

1. The temperature is related to the specific heat of the object, the intensity of sunlight, the inclination angle of sunlight, the irradiation time, the surrounding convection and the heated area.

The temperature of every object in the same environment is different.

3. Temperature changes with time

4. The temperature felt by human body is different from the actual temperature of the object.

5. The real-time temperature of a specific object is certain, but there is great uncertainty in a time span and a space span.