http://www.intellicast.com/Local/Weather.aspx?location=USNM0005 Intellicast shows sunny days all though the symposium. There might be a little snow late on the 30th.
In Colorado, it might snow on the 29th, but be clearing by the time folks need to drive north. Nice!
So although I was open to the possibility of rearranging the schedule to go up to the Crest on Sunday, Monday looks good. What we need is a clear sky, so you can see a long, long way from the top of that mountain!