It sounds like you know some good foraging already -- raspberries, dandelions, and morels are a great combination! About the weather -- here in Oregon's Willamette Valley, we don't get much rain in the summer. It's a Mediterranean climate that's really wet in the winter and dry in the summer. Not even one inch total for July and August, most years. This year is was zero -- zilch -- in those months. It would be cooler and wetter in your triangle than in the Willamette Valley. Maybe not rain, but fog along the coast. The big shift that bothers most folks is the cloudiness of the fall, winter, and spring. It can be gray for a long time! Hope that helps -- and be sure to visit Oregon in the winter, not just the summer!