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Temperatures
The tropics in the winter time receive just about the same amount of sunlight as they do in the summer. Because of this, winters in the tropics don't get a lot colder than the summers do. The coldest tropical winters get is about 65 degrees Fahrenheit, on average. In contrast, winters in temperate climates can go below freezing. It is the temperature differences found in the temperate regions that fuel the weather there. Tropical weather is fueled solely by tropical heat, and also by the convection cells of moving air found in the tropics.
Snow
This difference in temperature between tropic and temperate zones creates a distinctive difference in their winter weather. Temperate climates often have snowfall during the winter. Tropical climates are too warm for snow, which needs temperatures at or below the freezing point to form. Tropical winter temperatures do not get that low. Tropical winters tend to have little precipitation, but when they do it is rain.
Winter Storms
Tropical and temperate regions each have different types of winter storms. The cold winter air of the temperate climates creates regions of high pressure and a front which are bounded on the outside by warm air from the tropics. This combination creates blizzards, which are powerful storms with high winds and large amounts of snow. Winter storms in the tropics have no high pressure cold air to form around and create blizzards. Instead, the tropical warmth creates the largest storms anywhere in the world, which are known as cyclones. Thunderstorms are the winter storms that are found in wet tropical climates.
Dry Tropical Climates
Deserts tend to form on the edges of tropical zones. In these tropical regions, there is little to no precipitation at all in the winter time. Semi-arid tropical zones also tend to have very little precipitation during the winter. Consequently neither of these tropical regions have winter storms.