In METAR terminology, what does "T" represent?

In METAR terminology, "T" represents Temperature. This notation is utilized to provide the observer with the temperature of the air at the time of the observation, which is fundamental in understanding current atmospheric conditions. The temperature is typically expressed in degrees Celsius or Fahrenheit, depending on the regional standards. This information is critical for various applications, including aviation, where temperature can significantly impact aircraft performance, weather prediction, and flight safety.