[SaskS14]

Something else to consider is that there are going to be people crossing the Continental divide to get there. It is completely possible for there to be snow storms in the mountains all they way into June. Especially for those heading down from Canada and the Northern States.

Performance tires and the cold don't mix. Add snow to the equation and you have a deadly combination.

Also consider that Canadian 'reading week' (Spring Break) takes place mostly in February. I know from trips in the past that schools from Washington, Minnesota, Wisconsin and other places have their spring break in February as well.