What does "TN" signify in the context of a METAR?

In the context of a METAR, "TN" signifies the minimum temperature recorded during the specified time period. METARs provide essential weather information, including temperature measurements, and use specific abbreviations to convey these details efficiently. The minimum temperature is an important metric for understanding conditions, especially in relation to agricultural practices, frost potential, and overall weather trends. While other types of temperature measurements, such as maximum or average temperatures, exist in various weather reports, "TN" is uniquely designated for the minimum temperature, making it an important factor for users interpreting the data.