What is the most important factor affecting the temperature difference?

The factors affecting the daily temperature range are: 1, latitude, and the daily temperature range decreases with latitude. 2, season, summer is big, winter is small. 3. Terrain, small convex and large concave. 4. The underlying surface is small in water surface and large in land. 5, weather, sunny range is greater than cloudy.

The influencing factors of annual range are: 1, latitude 2, land and sea distribution 3, altitude 4, dry and wet climate 5 and rainy season.