How early do you usually get snow up there? I am coming back first week of Oct. I am hoping for fall weather, not winter...
I live 33 miles away, east, on the border of MI, and last year we got our first 4-6 inches of snow or so around the date of this tourney last year.
That being said, we are higher up in elevation and even in January the snow levels drop off substantially if you drive any direction south or west (the opposite its true for driving north or east), so Highbridge/Mellen should be alright.
October is usually great disc golf weather all around.