In winter, have you found that the temperature is often higher in rainy days, but it is very low and cold when the sun comes out? Why?

If it is in the north, especially in the northeast, if it rains in winter, it proves that the weather is warm. Only in warm weather can water be turned into rain, otherwise it will snow.

If it is in the south, the process of rain is from gas to liquid, and the gas is exothermic, so the temperature will get higher. However, the subsequent rainwater evaporation will absorb heat and the temperature will drop.