Fall potatoes?

I planted potatoes for the first time last year, and to be fair I planted late.  I didn't get very many potatoes.  I didn't get them in at all this year, but I will try again.  With my climate in N. California zone 9 b I would like to try to plant a fall crop just to see what happens.  I can get seed potatoes super cheap now because it is way to late to plant.  No seed potatoes to be found in the fall.  Is there any way to keep them from rotting, or dieing from now until fall?  We don't have a basement, or any cool place in the summer.  Could I refrigerate them?  Thanks