Actually, extreme heat is more deadly, since it kills more people on average every year than hurricanes, tornadoes, flash floods, and lightning combined.
When the temperature outside is 100F or higher and the humidity approaches 40%, the heat index soars from anywhere between 110F and 120F. Heat poses a significantly greater hazardous threat than the cold.
If you are outside in extreme heat, your body is losing water faster each minute you are exposed to these conditions. Because your body requires a sensitive balance to maintain homeostasis, your sweat evaporates right off your skin and your body cannot replenish itself from the loss of fluids. It is very easy to go into a heat stroke and even become unconscious in these conditions.
Whereas in the frigid cold, your body isn't losing water like it would if it was sweltering outside. Cold induces frost bite and numbness on any exposed skin because skin can freeze just like any other solid. If you're exposed to these conditions for a prolonged amount of time, eventually your body will fail to maintain homeostasis and your temperature would plunge into fatal levels.
To be honest, both these conditions are extremely dangerous to your body, but the heat has a much greater capability of killing you faster than if you were left out in the cold. But many fatalities which occur in weather-related incidents do happen from heat stroke and severe heat exhaustion.
Hope this helps you!
· 9 years ago