Husband and I are in the early stages of planning a trip to Oregon with our 10 yo grandson in early August. First trip there. Will be flying into Portland and staying 8 - 10 days traveling the state. Grandson wants to see Crater Lake and sealions and whales (if possible). We're also thinking of trying to include Redwood NP in CA. Can we expect warm weather? Could use some ideas of places grandson would enjoy seeing. Read there is the Newport Aquarium - worth seeing? Any help greatly appreciated.