Hi Gerry,
Glad the information was timely for you. I've stayed with about 45*F for most of my tubers and bulbs and it seems to work. Any warmer and they might dry out and any colder would be too cold, so somewhere around 45 seems to be the magic number. If you can store them in sphagnum that's even better because it acts as another bit of insulation.
I hope this works for you.
