I don’t think temp is a criteria any more…
A Blizzard Warning indicates that blizzard conditions (low visibility of less than 1/4 mile due to falling and/or blowing snow, and winds at least 35 mph) are expected for at least 3 hours.
A few more shots from Yellowstone then the Drive back to Bozeman today , which was challenging. Icy with snowpack, thank god for the 4 wheel Drive forerunner I had! Currently -1 here in Bozeman. 6am flight tomorrow, that’s gonna hurt!