Weather in Dallas in September
September in Dallas is warm with average temperatures around 26.1°C (79.0°F). Moderate rainfall of 77mm spread over 8 days.
Data Note: Temperature values are 2001–2020 satellite/reanalysis grid averages from NASA POWER and may differ from airport station normals by a few degrees.
Temperature
High
32.1°C
89.8°F
Low
20.2°C
68.4°F
Precipitation
77 mm
3.0 inches
~8 rainy days
Conditions
Humidity
63%
Comparison to Adjacent Months
September is 4.1°C cooler than August.
September is 6.4°C warmer than October, 25mm drier than October.