Hi Tom, Hi Midnight, Hi Mockturtle, greetings from Bend <img src="/forums/images/graemlins/grin.gif" alt="" />
It may freeze here tonight! Two nights ago I lost two sprinkler heads to ice forming inside and I may lose some more tonight, the forecast is for freezing.

In other words - its still winter conditions in these here hills. A 20 degree bag would be a minimum choice. But up on the "hill" I'd probably carry my WM super Kodiak (minus5) even in June. <img src="/forums/images/graemlins/grin.gif" alt="" />That bag is larger than most modern packs will hold. <img src="/forums/images/graemlins/tongue.gif" alt="" />

Its hard to choose where the weight safety trade off is, but with this years weird weather, anyone venturing out above tree line or in the PNW at a minimum, should carry warmer clothes this year. Hiking I think rain gear that will go over 300 fleece pants and jacket at a minimum, plus some extra water and a flash light and a BIC should be the minimum hiking gear. That would allow you to survive exposure, but would rely on your fire skills etc to be comfortable, at least having the right clothes may make an all out effort to reach the truck more reasonable.

As I alluded to on another post - the slope from Camp Muir is VERY steep. You should NOT be off trail without an iceaxe and crampons, and of course, boots capable of carrying crampons. The runout is thousands of feet.
Jim <img src="/forums/images/graemlins/tongue.gif" alt="" />