Worried about a bit of snow ? All above models are just straight ordinary brushless motors, ordinary servos, radio gear etc. They all got drenched in snow ... brushed off ... back in air / use ... and they will all be out again soon for 2017 winter meet ...
As another says - just let it dry out nicely indoors.
I suggest you only wipe it over - don't use hairdryers or air blasting - that only drives the moisture deeper ...
FYI - it was common practice to run electric motors in a bucket of water to 'run them in' years ago ... Fresh Water is actually a very poor conductor, distilled de-ionised water in fact does not conduct at all. But beware of dirty or salt water - they do cause corrosion.
Snow is fine as its water vapour frozen before it becomes water drops and is fresh water base.
Nigel