1st time on the JMT. I plan on carrying the only sleeping bag I’ve ever had. Anybody familiar with the discontinued Campmor 20 degree 550 fill goose down bag? That’s what I have. Worried it might not be warm enough for nights June 21-July 6th. I will be purchasing a sleeping pad that will support some warmth as well. Thanks.
Tyler, I’m not personally familiar with that bag, but I carried a 20 degree bag on my JMT hike. The R-value of your sleeping pad can make a big difference. Last year I used a Big Agnes Insulated Q-Core inflatable pad and it worked great on nights well below freezing.
Part of the trouble is, measuring the warmth of a sleeping bag is not an exact science. The R-values and temperature ratings are often inflated (deflated?). YOU are the ultimate measure of what will work.
For that reason, I highly recommend taking it out on a shakedown trip — an overnight where you can experience similar temperatures and you’ll know first hand whether you’ll be warm or not.
One final bit of advice — you can always layer up if it gets really cold. Wear your jacket, beanie, gloves — whatever it takes.
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