Prolonged exposure in such conditions can lead to death, so if you must venture outside overnight, dress appropriately and do not leave any of your skin uncovered.
Low temperatures in the neighborhood of -10 F to -20 F are expected, while central basins could see -30 F at times and the Upper Green River Basin could sink to -40 F.
With the wind hitting speeds upwards of 50 mph and the temperatures dropping to record lows (-30 degrees), the new argument has aroused of which aspect of Wyoming winter is the worst: the cold or the wind?
Frostbite can occur in less than five minutes in such conditions, so dress appropriately if you go outside and take extra care to protect extremities such as fingers, toes, ear lobes and the tip of your nose.