Probably not the answer your looking for, but a suggestion on how to best (in my opinion) use the graphs.
I only use auto-scaling on a few graphs, for everything else I use a scale appropriate to my climate (example: 30.02" is the long term average pressure at my location, so I have it as the center of my pressure graph).
I have always viewed graphs as being something I can glance at quickly to get a view of the current conditions, without having to study the graph carefully.
Wind Speed would be the best example of this. If it's a fairly calm day I don't want a 3 MPH wind gust reaching the top of my graph, I want it to show as a small ripple across the bottom.
I do use auto-scale for my cumulative rainfall graphs and my 24 pressure graph.
My wind speed strip chart is on this page:
http://www.lfweathercenter.com/graphics4.htmSince it's currently calm, I've attached an example from the past.