The average normal body temperature is generally accepted as 98.6°F (37°C). Some studies have shown that the "normal" body temperature can have a wide range, from 97°F (36.1°C) to 99°F (37.2°C).
Normal body temperature is considered to be 37°C (98.6°F); however, a wide variation is seen. Among normal individuals, mean daily temperature can differ by 0.5°C (0.9°F), and daily variations can be as much as 0.25 to 0.5°C.
115 degrees: On July 10, 1980, 52-year-old Willie Jones of Atlanta was admitted to the hospital with heatstroke and a temperature of 115 degrees Fahrenheit. He spent 24 days in the hospital and survived. Jones holds the Guinness Book of World Records honor for highest recorded body temperature.
Infrared thermography showed that at rest the skin temperature over lower limb muscles was significantly higher in men than in women. In response to exercise an increase in skin temperature over the studied muscles was significantly higher in women than men.
Cold Hands, Warm Heart
But a University of Utah study published in the journal Lancet found that women's core body temperatures can actually run 0.4 degrees F higher than men's on average.
Your metabolism is the rate at which you burn food to fuel the body, and as a by-product of that process, you heat up the body. So women's bodies are colder than men's because our metabolisms are slower—which is also the reason we can eat fewer calories before gaining weight.
A wet-bulb temperature of 35 °C, or around 95 °F, is pretty much the absolute limit of human tolerance, says Zach Schlader, a physiologist at Indiana University Bloomington. Above that, your body won't be able to lose heat to the environment efficiently enough to maintain its core temperature.
While human body cells start to die anywhere 46-60 degrees celsius, temperatures of around 50 degrees is when most irreversible damage to cells start as the proteins within begin to coagulate.
TL:DR numbers: Dry air: 120+ °C (248+ °F) short term, 70+ °C (158+ °F) long term (with access to water at cooler temperatures). Tropical air: 60+ °C (140 °F) short term, 47 °C (117 °F) long term.
Men Vs Women Temperature Preferences
A number of studies have found that, on average, women tend to prefer rooms that are a bit warmer than men. It is been found that women tend to prefer the room temperature at 77°, while men are more comfortable a bit cooler at 71°.
The research found that women prefer an office temperature of around 24C (75F), whereas men are more comfortable at around 21C (70F).
Sweating more or feeling hotter than usual can be due to medication, hormonal changes, stress, or an underlying health condition, such as diabetes or an overactive thyroid.
Research has shown that when the temperature gets to 35C, accompanied by high humidity, health is put at danger. Once 40C is reached, it can be dangerous even with low humidity levels.
It could be fatal. It is commonly held that the maximum temperature at which humans can survive is 108.14-degree Fahrenheit or 42.3-degree Celsius. A higher temperature may denature proteins and cause irreparable damage to brain. Simply put, the human body can turn into a scrambled egg.
The wet-bulb temperature that marks the upper limit of what the human body can handle is 95 degrees Fahrenheit (35 Celsius). But any temperatures above 86 degrees Fahrenheit (30 Celsius) can be dangerous and deadly.
A deep red fire is about 600–800° C (1112–1800° F). An orange-yellow fire is about 1100° C (2012° F). A white flame is hotter than both, having temperatures of 1300–1500° C (2400–2700° F). A dazzling white flame is the hottest flame of all, with a range of 1400–1650° C (2600–3000° F).
The two hottest temperatures on record are the 134 degrees 1913 in Death Valley and 131 in Tunisia in July 1931. Burt, a weather historian for The Weather Company, finds fault with both of those measurements and lists 130 in July 2021 in Death Valley as his hottest recorded temperature on Earth.
Death Valley, California
According to the World Meteorological Organization's Global Weather & Climate Extremes Archive, temperatures in Death Valley reached international extremes when they hit 134 degrees Fahrenheit (56.7° Celsius) in 1913 — the hottest temperature recorded anywhere in the world.
As a follow-up study of a 2021 investigation , researchers at the University of Roehampton in England conducted a second set of experiments to investigate the upper limit of the thermoneutral zone. They found that the thermoneutral zone's upper limit likely lies between 40℃ (104F) and 50℃ (122F).
The reason for this is that the average person can touch a 140°F surface for up to five seconds without sustaining irreversible burn damage. Telcordia GR-63 for telecommunications appliances categorizes contact surfaces by material types –metal and nonmetals, shown below.
One of the most ubiquitous sources of heat inside buildings is, of course, the human body. And buildings where, at least in ordinary times, people gather in large numbers have the greatest potential to put that stuffy, human-warmed air to good use.
In many cases, hot sleepers simply experience high temperatures when they are in relaxed states. In some situations, however, sweat can be a symptom of more serious complications, even when it occurs during slumber. The night sweats men experience aren't necessarily the same as those endured by women.
Men and women have roughly the same core body temperature, at over 37C; in fact, some studies have found the female core body temperature is slightly higher. However, our perception of temperature depends more on skin temperature, which, for women, tends to be lower.
Far outside our solar system and out past the distant reaches of our galaxy—in the vast nothingness of space—the distance between gas and dust particles grows, limiting their ability to transfer heat. Temperatures in these vacuous regions can plummet to about -455 degrees Fahrenheit (2.7 kelvin). Are you shivering yet?