Why does it rain more in winter than summer Antarctica?

Antarctica is the driest continent on Earth, with an average annual precipitation of less than 2 inches. While precipitation does occur in Antarctica, it is mostly in the form of snow, not rain. The average winter temperature in Antarctica is -57 degrees Fahrenheit, while the average summer temperature is 28 degrees Fahrenheit. This means that the atmosphere is too cold to hold much moisture, which is why precipitation is so rare.