January weather forecast in South Dayton

January in South Dayton is the snowiest, the windiest, the cloudiest, and the most freezing month of the year. In January, the weather in South Dayton is typically freezing. Average daily high temperature in January is about 2 degrees below zero. On average, South Dayton has 21 snowy, 6 cloudy, 3 rainy, and 1 sunny day in January. The snowfalls are usually moderate.