The New International Encyclopædia…
“ In few places is the influence of topography on climate more apparent than in Oregon. The winds from the ocean are deprived of nearly all their moisture by the Coast and Cascade ranges, which also bar out the tempering influence of the sea, so that the portion west of the Cascades has a moist and equable insular climate, while east of the mountains the climate is dry and continental, with great extremes. On the coast winds from the sea temper the summer heat, and tend to reduce the cold of winter, while cold winds from the northeast are barred out by the mountains. ”
