Average temperatures, rainfall and packing tips for Dallas, United States in August
August in Dallas is typically very hot, with average daytime highs around 37°C and nights near 26°C. It is usually the warmest month of the year in Dallas.
Rainfall is light in August: roughly 19 mm across the whole month.
If your dates are flexible, the most comfortable months in Dallas are usually February, March, April, May, October and November.
← Dallas weather tomorrow (live)
In August, Dallas averages a daytime high of about 37°C and a night-time low of around 26°C, based on recent historical data. That makes it the warmest month of the year there.
Rainfall is light in August: roughly 19 mm across the whole month.
August is seriously hot in Dallas. It's still doable - plan outdoor activities for early morning or evening, and build in shade and hydration breaks around midday. If your dates are flexible, the most comfortable months in Dallas are usually February, March, April, May, October and November.