Mean Temperature
The average of temperature readings taken over a specified amount of time. Often the average of the maximum and minimum temperatures.
Temperature
The measure of molecular motion or the degree of heat of a substance. It is measured on an arbitrary scale from absolute zero, where the molecules theoretically stop moving. It is also the degree of hotness or coldness. In surface observations, it refers primarily to the free air or ambient temperature close to the surface of the earth.
Maximum
The greatest value attained by a function, for example, temperature, pressure, or wind speed. The opposite of minimum.
Minimum
The least value attained by a function, for example, temperature, pressure, or wind speed. The opposite of maximum.