Is it weather or climate when it snows?

Snow refers to the weather, not the climate.

The difference between the two:

"Weather" refers to the comprehensive situation that affects the instantaneous meteorological characteristics of human activities. For example, we can say: "Today the weather is fine, sunny and sunny, with clear skies in Wan Li;" Yesterday, the weather was terrible, there was a storm, and so on; "Climate" refers to the multi-year characteristics of meteorological conditions of the whole earth or a certain region in a year or a period.

Note: No problem at all! Please adopt!