January weather forecast in Granbury

January in Granbury is the coldest month of the year. In January, the weather in Granbury is typically warm. Average daily high temperature in January is about 12 degrees above zero. On average, Granbury has 18 sunny, 10 partly cloudy, 2 rainy, and 1 cloudy day in January. The rains are usually heavy. January as well as August and December is considered the most uncomfortable time to visit Granbury.