All in all the rainfall at a particular place is determined more by large scale weather patterns than by the local evaporation. So the answer is that the reason it rains more in winter – at your place – is because in summer that rain is falling somewhere else.
The wettest areas are on the northeastern plains near the Colorado -Kansas or Colorado -Nebraska borders. The low-elevation areas both north and south of the Palmer Divide and directly east of the Rockies are the driest.
Depending on where you live in Colorado , winters can actually be quite mild. Overall though, winters in Colorado are not bad as there are minimal super snowy days. Otherwise, you can expect normal weather with snow, cold temperatures, beautiful winter scenery, and nothing too extreme.
WHY DOES IT RAIN ? The Sun’s heat causes moisture from oceans and lakes to evaporate into the air, forming water vapor. The vapor rises, cools, and condenses (turns into a liquid) into tiny water droplets, which form clouds. Then they fall as rain .
EXPLANATION: Other reasons for winter rain include retreating monsoon, trade winds and also south-westerly monsoon. Winter rain is beneficial for rabi crops as it provides the much needed water to these crops. However, excessive winter rain can also cause crop damage, floods, landslides and avalanches.
For the entire United States, excluding Hawaii and Alaska, the average amount of moisture falling as rain and snow is 2.42 inches (61 millimetres). The precipitation totals are averages for the months of September, October and November. Average monthly precipitation for each state in fall .
3. Denver is one of the sunniest cities in America , averaging 300 days of sunshine a year.
Here in Colorado , when we sweat, most of the time it evaporates allowing for heat to be released and our body temperature to regulate. In New Orleans, because the air is so moist, sweat doesn’t evaporate easily, which leaves you hot and sticky most of the day.
Snow is relatively sparse in any areas of the state below around 4,500 feet elevation, as well as in the west-central valleys of the Western Slope, and the lower Arkansas River valley. That does not mean snow -free and it doesn’t necessarily mean not cold.
It has snowed each month of the year in Colorado , but the snow is mainly during the months of late October – late April. Snow is usually heavier and wetter (more moisture) in the spring time than winter. The mountains receive more snow and it sticks around longer than Denver/Front Range area.