Snow at WBCS Walker - An eastbound Union Pacific manifest train pulls through CP Walker on BNSF Main #2 on a cold February morning (28 degrees) after a light snow storm. The Cajon Pass does not see snow often, and it is rare for the snow to stay on the ground into the afternoon. Eventually, the air did warm up to a balmy 34 degrees and it was quite comfortable to stand in the sun, while the shady spots remained chilly.