December in Valea lui Mihai is the snowiest month of the year. In December, the weather in Valea lui Mihai is typically cold. Average daily high temperature in December is about 3 degrees above zero. On average, Valea lui Mihai has 16 cloudy, 6 rainy, 6 sunny, 2 partly cloudy, and 1 snowy day in December. The rains are usually moderate. December as well as January, February, March, and May is considered the most uncomfortable time to visit Valea lui Mihai.