In December, the weather in Piatra Neamţ is typically cold. Average daily high temperature in December is about 1 degree above zero. On average, Piatra Neamţ has 10 partly cloudy, 9 cloudy, 7 sunny, 3 snowy, and 2 rainy days in December. The snowfalls are usually light. December as well as January, February, March, and April is considered the most uncomfortable time to visit Piatra Neamţ.