148 days is a number to be proud of and a challenge for next year. Considering you're living in snowy SD, it is not surprising to encounter sufficient snow that a bike can't overcome.
Great work [MENTION=175954]Tundra_Man[/MENTION]!!!
This morning's commute was in mild -3C weather. It was mild (+2C) on the ride home yesterday so more snow/ice melted (not that we had much, most of it was leftover from the freezing rain and light snow that followed it on Friday) and it had frozen overnight so I had to be careful around icy patches but no issues because road sand/grit had become embedded into the icy so it wasn't really slippery.