January in Niagara Falls is the snowiest, the windiest, the cloudiest, and the coldest month of the year. In January, the weather in Niagara Falls is typically freezing. Average daily high temperature in January is about zero. On average, Niagara Falls has 9 cloudy, 9 partly cloudy, 5 rainy, 5 snowy, and 3 sunny days in January. The rains are usually heavy. January as well as February, March, April, and October is considered the most uncomfortable time to visit Niagara Falls.