What's the weather like when it snows at this time? ...

The basic conditions of rain and snow are the same, and the biggest difference lies in the temperature. In general, the temperature of the clouds in the sky is below 0℃, and the water vapor in the clouds condenses into small ice crystals. When the airflow can't hold these small ice crystals, they will fall from the clouds. So, do people see snow or rain on the ground? It depends on the temperature near the low altitude. If the temperature at low altitude is relatively high, when the ice crystals fall, they will melt again and become water droplets during the falling process. At this time, what we see is rain. On the other hand, if the low-altitude temperature is still below 0 degrees and the ice crystals can't melt, it will snow. As far as Hangzhou is concerned, it is easy to snow when the ground temperature is 2℃, 3℃ or below.

In addition, you may think it's coldest when it snows, but it's even colder when it melts. Because in winter, before or when it snows, the warm and humid airflow is generally active, and when the snowfall ends and the weather turns fine, it is usually accompanied by cold air going south, and at the same time, the snow melts and absorbs a lot of heat, so the weather is colder than when it snows.