December in Longreach is the hottest month of the year. In December, the weather in Longreach is typically hot. Average daily high temperature in December is about 35 degrees above zero. On average, Longreach has 14 partly cloudy, 11 sunny, 3 rainy, and 3 cloudy days in December. The rains are usually light. December as well as January, February, and November is considered the most uncomfortable time to visit Longreach.