Hey Steve,
That's one of the reasons I moved south is for the year around riding. Around here I manage to get the same mileage in even in December and January - I try for 700 miles a month but normally end up a little under with an average of 7800 miles a year. I plan on being up in your area starting this weekend. I am going to ride the Munger Trail starting at the Duluth end, and the Gandy Dancer over in WI.
I need a bigger vehicle for vacations. I can only bring three bikes and it sort of puts a limit on my riding.
Jeff