Snow/Rain/Sleet is an obvious problem for Droners
What's the big deal
During the winter most droners aspire to capture majestic shots of snow covered trees.
Most people won't take their drones out if its raining, but what if its snowing. Snow isn't a huge problem for drones because it is too solid to mess to get into the electronics: telemetry and controls. But it brings in another problem the cold.
Because the batteries are lithium and infused with a protective lining they can withstand most extreme temperatures. THIS ISN'T FAIL PROOF though.