What does it mean that it is very hot in early winter this year?

Usually, the weather in early winter is sunny and warm, so there will be more sunny and warm weather all winter. If it is rainy and cold at the beginning of winter, there will be more rain and colder weather all winter. However, these are the experiences summed up by some proverbs. Moreover, China is a vast country with different weather and climate, so the experiences summed up by these proverbs are not necessarily reliable, depending on the weather conditions in different regions.