Agree that last year was not typical. You should be able to ride somewhere in the UP well into March if not into April. Note the "somewhere".
My suggestion is book your time off but don't book accommodations or your location yet. You can get better deals later, plus you can see where the best snow conditions are and "chase the snow".
Like Dave B said, you can get some great late season conditions. Two years ago we were in the western UP in I'm pretty sure mid-March. The snow was great and the first two days the temps were in the low teens or single digits. The third day it was over 50 degrees and we were riding in T-shirts and light jackets without gloves. Sweet!
Unfortunately, my buddy also blew up his XLT a couple miles from Copper Harbor. (Never did like those heats exchangers under the running boards.) Drove the truck home with the sunroof open, and had to clean the squished bugs off the trailer once I got there. Late season = fun most years!