Answer:
Gravitational time dilation occurs because objects with a lot of mass create a strong gravitational field. The gravitational field is really a curving of space and time. The stronger the gravity, the more spacetime curves, and the slower time itself proceeds.
Latitude influences your weather by determining which type of weather systems will cross the area and how frequently, elevation influences your weather because higher elevations have lower air pressure than lower elevations, thus allowing the air to be colder on average. Local geography influences your weather due to different areas being nearby mountain ranges, bodies of water, and other things that can create or dissimilate different weather systems.