Even in the "tropics" of SNE I've seen some pretty wild temp variance with deep snowpack in place. Growing up, my area was a pit relative to the surrounding terrain. I recall instances where I could be as much 10 degrees colder than other backyard sites just a couple miles away and ~150'-200' ft higher up. Not a common occurrence by any stretch, but when it would go calm imby it would really tank, while a little higher up it wasn't able to decouple.