I went to Whitehorse with my folks, this year, over the Mother's Day weekend (got there Friday early evening, left mid-afternoon on the following Monday), which, for the benefit of our non-NAm friends, was May 14th.
It snowed a bit on the Saturday morning, but not much, and apart from that it was rainy on and off. The lakes were still broadly frozen, but it wasn't that cold.
Incidentally, Louis, the kind of weather that emoticon depicts makes me
, and any other happy things!