Which of the following is NOT a military aspect of weather?

Seasonality is considered more of a broader environmental factor rather than a direct military aspect of weather. In military operations, visibility, cloud cover, and temperature are critical components that can have immediate and tangible effects on operational capabilities, planning, and execution.

Visibility impacts the ability of units to conduct operations, as it affects sight lines and target acquisition. Cloud cover can influence air operations and the effectiveness of surveillance. Temperature, on the other hand, plays a significant role in personnel performance and equipment functionality during various phases of combat.

While seasonality may affect planning and resource allocation over the long term, it does not have the same direct and immediate implications for military operations as the other three elements do. Thus, seasonality is not categorized as a military aspect of weather in the same context as visibility, cloud cover, and temperature.