Final answer:
The METAR codes for degree of cloudiness in sky condition evaluations consist of a three-digit number that represents the amount of sky covered by clouds and the type of clouds present.
Step-by-step explanation:
The METAR codes for degree of cloudiness in sky condition evaluations are represented by a three-digit number. The first digit denotes the amount of sky covered by clouds in eighths, ranging from 0 (clear sky) to 8 (completely overcast). The second and third digits represent the type of clouds present. For example, a METAR code of 025 would indicate a sky condition with a coverage of 2/8 (about a quarter) and no specific cloud type.