How to decide whether the weather is sunny, cloudy or rainy by temperature, humidity and air pressure?

When the temperature is high, the air pressure is low, because the high temperature makes the air expand and the relative air density becomes high.

When the temperature is high, the air pressure is low and the humidity is high, it usually rains.

When there is fog, the temperature is high and the evaporation is large, which is usually sunny.

When the temperature is moderate, it is usually cloudy, because there are more clouds on cloudy days, and a large number of clouds reflect most of the heat of the sun and the heat of the earth, thus playing the role of heat preservation, and the temperature will not be too hot or too low.