I ride regardless, we got a freak storm last month in boise got 7" in two days then the temp dropped into single digits so everything froze and actually made riding easier. I bought a new pair of nokian extremes last year and am glad I did, it doesn't get too crappy here that often but when it does Boise is completely unprepared and the snow stays on the roads for ever. Granted my ride isn't 10+ miles any longer but that never stopped me in the past, last two years ago my daily commute was 24 miles and I only missed three weeks of riding due to a back injury where I had to get rides from my wife and coworkers.