In September, the weather in Tula de Allende is typically warm. Average daily high temperature in September is about 23 degrees above zero. On average, Tula de Allende has 19 rainy, 7 partly cloudy, 2 sunny, and 2 cloudy days in September. The rains are usually heavy. September as well as June, July, and August is considered the most uncomfortable time to visit Tula de Allende.