January in Cunnamulla is the rainiest, the cloudiest, and the hottest month of the year. In January, the weather in Cunnamulla is typically hot. Average daily high temperature in January is about 34 degrees above zero. On average, Cunnamulla has 17 sunny, 12 partly cloudy, and 2 rainy days in January. The rains are usually light. January as well as February and December is considered the most uncomfortable time to visit Cunnamulla.