I love being in the Cascades in October whether I'm hunting elk, hunting deer, fishing, or just backpacking. Crisp frosty mornings, warm afternoons, amazing colors, and usually not that many people. I feel much the same way about the southern part of the Oregon coast range though the rain often starts earlier. I've shot enough deer and elk, caught enough fish ... I don't really need to do it in the rain anymore. If I want to get serious about killing something, then just above snow level .. cutting sign and tracking individual critters in the snow is fun.
Tom