flying in modern times

I have a plane flight leaving SFO for BOS at 6:30 a.m. tomorrow. Any advice on how early to arrive (normally in the last year for a domestic flight I would try to be there 1 hour - 1.5 in advance)? Any advice about weird things I can't bring with me, or have to carry on instead of packing away, or vice versa?

Also, bostonites, any word worth speaking of about the weather? Shall I expect snow and ice and sleet and hail and frogs flying out of the sky at me?