# Snowing when the actual temperature is around $\small\sf9^o$ Celsius

In Paris, actually, it is snowing smoothly and the temperature, according to many sources, is around $\small\sf{9^o}$ Celsius.

I had always the feeling that snow is possible when temperature approaches $\small\sf0^o$ or below $\small\sf0^o$ Celsius (apparently, it is a huge prejudice)

How is that possible?

• Because air temperature (generally) decreases with altitude. It's below 0C up where the snowflakes form, and they don't have time to melt before they reach the ground. – jamesqf Mar 2 '16 at 18:39
• @jamesqf has put it right. It is easy to see the upper troposphere temperature (or air temperature not surface temperature) that drops to 0 or below during ice formation. – Gemechu Fanta Garuma Mar 2 '16 at 21:46