January weather forecast in Portland

January in Portland is the snowiest and the most freezing month of the year. In January, the weather in Portland is typically freezing. Average daily high temperature in January is about zero. On average, Portland has 11 sunny, 9 partly cloudy, 5 snowy, 4 cloudy, and 2 rainy days in January. The snowfalls are usually heavy. January as well as February, March, April, and October is considered the most uncomfortable time to visit Portland.