Steve C, those were the links I was using. I'll go with the NOAA site, appears we're looking at lows between 37-44 and highs 56-64 (at 12k). I'll play it safe and bring my winter bag.

And I'll give a call to my Doc tomorrow and ask for a prescription.
Again i'd rather play it safe, this is a big trip to do from the East coast, would hate to get so close and have to turn around.