weather in dallas in september
Average Weather in September in Dallas Texas, United States. In Dallas, the month of September is characterized by falling daily high temperatures, with daily highs decreasing by 9Â°F, from 93Â°F to 84Â°F over the course of the month, and rarely exceeding 99Â°F or dropping below 74Â°F.
The average sliding 31-day rainfall during September in Dallas is increasing, starting the month at 2.2 inches, when it rarely exceeds 4.6 inches or falls below 0.4 inches, and ending the month at 2.9 inches, when it rarely exceeds 5.9 inches or falls below 0.7 inches.