[pct-l] How much of (calif) section A-F is do'able in January

[greg mushial]

I'm hoping to be a thru in 2011...  but in dropping said hint at work, 
getting that much time off in one piece might not be possible. So instead of 
a "true thru" (Apr->Oct, Mex->Can), my plan B would be a "thru in a year", 
ie, do pieces or all of A-F in January and March, and then pick up in early 
June where I left off. So, my question is: when does winter come to the 
south? When (nominally) does Baden-Powell become snow covered; or asked 
differently: what parts are still doable (meaning trail walking, not 
snowshoe'ing) in January, and again, in March?
thanks - TheDuck