January in Saint-Pierre is the warmest month of the year. In January, the weather in Saint-Pierre is typically warm. Average daily high temperature in January is about 25 degrees above zero. On average, Saint-Pierre has 21 rainy, 6 sunny, 3 partly cloudy, and 1 cloudy day in January. The rains are usually heavy. January as well as February and March is considered the most uncomfortable time to visit Saint-Pierre.