January weather forecast in Hayward

January in Hayward is the cloudiest and the most freezing month of the year. In January, the weather in Hayward is typically freezing. Average daily high temperature in January is about 9 degrees below zero. On average, Hayward has 21 cloudy, 9 snowy, and 1 sunny day in January. The snowfalls are usually light. January as well as March, April, May, and October is considered the most uncomfortable time to visit Hayward.