January in Toowoomba is the windiest, the cloudiest, and the warmest month of the year. In January, the weather in Toowoomba is typically warm. Average daily high temperature in January is about 26 degrees above zero. On average, Toowoomba has 12 rainy, 8 sunny, 8 partly cloudy, and 3 cloudy days in January. The rains are usually heavy. January as well as February, March, and December is considered the most uncomfortable time to visit Toowoomba.