How many degrees does it snow, and does it snow above 0 degrees?

No matter how low the temperature is, it doesn't necessarily snow, but it also depends on whether there is water falling in the sky. 0 degrees is not enough to go down, in short, it can't exceed 0 degrees.

Possibly. Snow falls above zero temperatures at certain atmospheric pressures (high atmospheric pressure).

Three necessary conditions are required for the formation of snow: temperature, water vapor saturation and condensation nuclei, and as long as the three conditions are met, the snow requirements can be satisfied.

Only the effect of temperature is considered here, and the effect of water vapor saturation and condensation nuclei is not considered. When considering the effect of temperature, you need to consider the effect of altitude on the melting and boiling points of water.

As the altitude increases, the air becomes thinner and thinner, and the air pressure becomes lower and lower, at this time, we usually say that "the boiling point of water is 100", which refers to the temperature at which water boils at one atmosphere (standard atmospheric pressure), but the boiling point of water will decrease accordingly when the air pressure decreases, for example, at the height of Mount Everest, the boiling point of water is only Celsius.

On the contrary, if the air pressure increases, then the melting point and boiling point of water will also increase accordingly, and at this time, the crystallization temperature of water will be above zero, and it is said that it can snow under the conditions that the water vapor is saturated and the condensation nuclei are satisfied.

It can also snow when the temperature is above 0 degrees, but the main road temperature is between 0 and 5 degrees most of the time. At this time, the temperature of the place where the snowflakes are formed is below 0 degrees, and when the snowflakes enter the area above 0 degrees, they will not have time to turn into rain and fall to the ground. If the temperature on the ground is higher than 5 degrees Celsius, there will be no snow at all.

What is the temperature outside, the temperature of the snow is. Theoretically, when the outside temperature rises above freezing, the snow begins to melt.

But there is also the question of air pressure and purity.

For example, if the snow contains 20% salt, the temperature will start to melt when the temperature is 16 degrees Celsius.

For example, if it is not a standard atmospheric pressure, the higher the air pressure, the higher the temperature at which the melting begins. It can be 2 degrees, it can be 1 degree.

Below 0 degrees, the outside N degrees are N degrees.

freezing point). If the cold air is strong and humid, snow can also fall in temperatures between 1 and 10.

Formation of snow. The direct condensation of water vapor in the atmosphere or the direct solidification of water droplets is snow. It can also be said that the temperature in the clouds is too low, and the small water droplets form ice crystals, and when they fall to the ground and are still snowflakes, it is snowing. When ice melts, it traps heat, so the ground air temperature is cooler than when it snows.

1. The atmosphere needs to contain colder ice crystal nuclei.

2. Sufficient water vapor. freezing point). If the cold air is strong and humid, snow can also fall in temperatures between 1 and 10.

Where snow can fall: The climate zone is in the middle to high latitudes (i.e. about the area north of the Tropic of Capricorn), and the same is true in some of the lower latitudes in the middle mountains or plateaus above 2,000 meters above sea level.