hmmm. only you know if your wife likes surprises.
when we were in alaska several years back, in july, it was cold and it snowed. i don't even want to THINK about november ... so at the very least, pack her some silk long john layers, gloves, socks, scarf, hat ... if you do it all with silkies it won't take up much room and she won't freeze. PLEASE make her wear an appropriate coat for the trip. p.s. you can mail order, quickly and inexpensively, silk long johns etc. from sierratradingpost.com ... just order a size up - they run small. have fun, brave one!