Let me share the forecast for Yellowstone:
"Rest of Tonight--Partly cloudy early in the evening then becoming cloudy. A 50 percent chance of snow after midnight. Lows 7 below to 13 below zero. West winds around 15 mph after midnight. Wind chill readings 23 below to 33 below zero."
You read that correctly-33F BELOW ZERO!!!!!!!
This morning my car staged a revolt and made awful noises when I started it. And you know it's really cold when the bison standing in front of the Mammoth Hotel are coated in ice. I almost wept when I unpacked my shorts--I won't be needing them until maybe July.