While you might find truckloads of snow at the original coordinates; the cache is located elsewhere.
Snow crystals form in clouds when the temperature is underneath freezing point. They are created by water droplets freezing on small ice particles. As an ice crystal drops through the cloud it bumps and knocks others and becomes a snowflake. This process of bumping others, along with a little melting and re-freezing aids the creation of their complex design. The air that the snowflake drops through has to be under freezing otherwise the snowflake will simply melt and turn into rain.
Amazingly, snowflakes always have six sides and similar to the human fingerprint, it is thought that no two snowflakes are ever exactly the same. Both the form and shape of a snowflake depends on the temperature and moisture content of the cloud. Snowflakes can be categorized into six main types, plate (flat), column, stars, dendrite (lacy, needle, and capped column. When it is extremely cold the snow is very fine and powdery and snowflakes become quite simple in design, usually needle or rod shaped. When the temperature is near to freezing point (0 degrees Celsius), snowflakes become much larger and a lot more complex in design, for example, a star.
If you want to take a closer look at snowflakes, check out Alexey Kljatov's macro photos.
(The above link is, however, not pertinent to solving this mystery)
Source: Weather Facts