I suggest that you study the REI Camping Advice topics. I live in the Rocky Mountains of Colorado. I am usually camping at 11,500 feet [3,500 meters] when I climb 4,300 meter summits. My climate is a dry, high-desert feel most days with a summer temperature range from 80 to 40 Fahrenheit [26 to 4 Celsius]. I carry more than $1,000 in high-quality gear on a backpacking trip. I carry at least two liters of water and a GravityWorks filter. I always wear two pair of socks to prevent blisters. I wear a fleece mid-layer and carry a down jacket with down mittens in my daypack to prevent hypothermia at night if I am stuck on a mountain through the night. I have spent a couple of nights shivering in a fleece and windbreaker, 20 kilometers from a sleeping bag. My pants dry quickly, Columbia cargo conversion. For cooking, I carry a JetBoil MiniMo and one canister of propane-butane fuel for several days. My tent is a Big Agnes, about 1 kilogram, 1-person. My sleeping bag is the Marmot Helium 800-down, ultralight and warm down to freezing. My sleeping pad is the Big Agnes Q-Core. Carry a dry set of sleep clothing and spare set of socks. I always carry a firestarter and two headlamps. I have been caught on cliffs after dark with a dead headlamp.