January weather forecast in Killeen

January in Killeen is the coldest month of the year. In January, the weather in Killeen is typically warm. Average daily high temperature in January is about 13 degrees above zero. On average, Killeen has 16 sunny, 11 partly cloudy, and 4 rainy days in January. The rains are usually moderate. January as well as May, July, August, and December is considered the most uncomfortable time to visit Killeen.