The main problem is not the cold but the temperature difference between night and day. 60 can feel quite cold if the daytime high was 110. I use a space blanket or emergency blanket it weighs about an ounce you can get them in most camping stores or you can get them free grocery stores and pet stores receive food packed in them. Also get a piece of bubble plastic these are also used as packing material there will be pieces blowing around if you are looking for them even a small piece placed under the hip bone helps. Look for scorpions under rocks they don't like comotion and will run off if you make a bunch of noise. Don't freak out Oregon has rabid bats lyme rocky mountain spotted fever etc. Coyotes will stay away from you you may not want to camp in one of their paths.