Hello there.
I'm hoping that someone can help me with a question that I have.
Quick background:
I'm going to Guadalupe Mountains National Park over New Years. One person in our group has been backpacking for a long time and has been to Guadalupe Mountains before. The weather forecast is supposed to be in the low to mid 30s at night and 50's in the day. The guy who has been before mentioned that he is going to get a 0 degree bag because he thinks his 15 degree bag isn't going to work for him. I have a 40 degree North Face Propel sleeping bag, plan to wear layers (long thermal base, medium Smart Wool socks, Mountain Hardware Monkey Man fleece, fleece hat) and will be inside a ID Salathe bivy. I slept in the bag in my room (windows down etc.) at 33 degrees in the room and felt very warm. From searching the forums I have found that I could get a silk bag liner and or wear my clothing in my bag.
Statement and Question:
I know that it gets colder with elevation and that people have various tolerances to cold but is that large of a variance necessary (low 30s temp and needing a 0 degree bag)? I realize this is a very subjective question. Am I missing something? Any thoughts or other techniques that I can use to make myself warmer in my 40 degree bag (if necessary)?
Thanks,
Todd
