>>2616019the winter months are the wetter months in the rain shadow - you can definitely go way east in oregon and there's probably not much snow in the winter, but there's not much water or people either.
In Central Oregon, where the people are, there's still plenty of snow and ice in the winter and you NEED studded tires in the winter.
There's no months of drizzle, central and eastern oregon and fairly sunny (but cold) during the winter, but both are fairly extreme coming from a temperate subtropical environment
your choice is - winter months of drizzle, barely warm spring, absolutely amazing summer
OR
winter nice and sunny but freezing (down to -10F regularly, especially at higher elevations), snow and ice everywhere from november-june and even july at higher elevations
its hard to out when everything is covered in snow most of the year