Final answer:
Warm and humid weather with the potential for thunderstorms and showers is expected from an mT air mass in summer, particularly significant in monsoon regions and tropical climates.
Step-by-step explanation:
During summer, the weather associated with an air mass designated as mT (maritime Tropical) is typically warm and humid. This type of air mass originates over warm ocean waters in the tropics, thereby carrying a significant amount of moisture. In the afternoon, the effects of this warm, moist air often lead to the development of thunderstorms and showers, particularly if the air mass moves over land and interacts with other weather features or is forced upward by terrain such as mountain ranges.
The mT air masses are characteristic of areas that experience monsoon seasonal winds, as well as regions with Type A: Tropical or Equatorial Climates. For example, in places like southern and eastern Asia during the summer monsoon, warm moist air is drawn in from over the oceans, leading to heavy rains necessary for agriculture and affecting the daily weather patterns significantly.