Guess what, it can get cold enough that it doesn't snow! Because snow is frozen water, if there are not enough water droplets in the air it can't snow.
You can make your own cloud by breathing in cold weather. Or, try breathing on a mirror; there will be a clear gray cloud on it!
For it to snow the tops of the clouds must be below 0 degrees Celsius, or 32 degrees Fahrenheit.
Believe it or not, snow is actually clear/transparent. Snow appears white because the crystals act as prisms, breaking up the light of the sun into the entire spectrum of color. The human eye is unable to handle that kind of sensory overload. Therefore, we see the snow as white or sometimes blue. The color of snow can depend on the environment in which you live. Some snowflakes look like they are pink. If you live in a place where your soil is red, snow is pink. The red dust blows into the clouds, discoloring the snow.
Scientists think that there are five different shapes of snow crystals. A long needle shape, hollow column that is shaped like a six-sided prism, thin and flat six-sided plates, six-pointed stars and intricate dendrites.
Fun facts about snow taken from here and here.
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