Snow
Snow was the formation of frozen water droplets high in a planet's atmosphere. It was white in color and required a temperature below 0 °C to hold its form.

Snow was extremely common on Andoria, () and could also be found on mountains on Earth. (; ) The Arctic Circle on Earth was also a region full of snow. ()

In 2151, Travis Mayweather told Malcolm Reed that he only saw snow twice in his life when the two went to an away mission onto "Archer's Comet" which was rich of snow and ice. After he fell down a crater, Mayweather wished he would never see snow again. ()

In 2285, Doctor David Marcus was amazed that snow was located in the same sector as the tropical land on the planet . ()

In 2364, Wesley Crusher and a friend of his joined a holodeck program which recreated the Denubian Alps. They went to the program for skiing lessons and later had a snowball battle. One snowball hit Captain Picard by accident. ()

In Data's recreation of the holonovel A Christmas Carol by Charles Dickens, it was snowing outside a window. ()

While trying to speak casually with Commander Riker, Ensign Sam Lavelle stated that Canada and Alaska both got a lot of snow. ()

In 2369, when the thoughts of the Deep Space 9 crew were becoming reality, snow appeared on the space station's promenade. Odo predicted that there would be five or six centimeters of snow and asked if the environmental controls had broken down. ()

In Captain Picard's version of the Nexus, he celebrated Christmas with his family while snow fell outside. ()

Before leaving Earth in the late 3180s, Starfleet Admiral Senna Tal saw snow for sentimental reasons.()

See also 
Blizzard
 
Ice
Snow cone
Snowball
Snowflake
Snowman
Snowstorm

External link 
 

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Meteorology