is there an uppermost temperature?

Answer 1

no... the min temp is 0kelvin but there is actually no defined uppermost temp... 4 eg stars temp in the core can reach billions of kelvins....

Answer 2

Temperature has a lower limit, but not an upper one...at least in theory. In the mid-1800s, Lord Kelvin created an absolute temperature scale whereas the lowest temperature possible is 0 K. Kelvin's lower limit seems to be withstanding the test of time. Not a single scientist nor anything in nature has been able to reach a temperature of 0 K or less. As for an upper limit, scientists are not willing to make a guess until more about the universe is known.

Some of the highest temperatures in the universe have been found in the cores of stars. The sun's core is close to 14 million K. The core temperature of a star about to go supernova can reach several billion K.

Answer 3

An interesting question. Surprisingly, certain physical systems have a "negative" absolute temperature, but that negative temperature should be thought of as hotter than infinity! The very "hottest" of the negative temperatures is actually also absolute zero, but approached from the negative side. So in that rather screwy sense, absolute zero is the uppermost temperature. For more information on the concept, you can check out the article on negative temperatures on Wikipedia
http://en.wikipedia.org/wiki/Negative_temperature

Answer 4

There is but not yet known. The upper temperature is not even used for anything at this time and thats too bad but it is what it is.