Dallas, Texas weather in August

Averages from 2021–2025 (155 days of record).

Average high: 96°F
Average low: 78°F
Rainy days: ~8 per month
Total precipitation: 4.4 in
Warmest recorded: 109°F
Coldest recorded: 71°F

Expect August days in Dallas, Texas to top out around 96°F and cool to about 78°F overnight, with roughly 8 days of measurable rain across the month. In recent years August has ranged from 71°F to 109°F.

Other months

January February March April May June July September October November December

Current Dallas, Texas forecast → · Historical data by Open-Meteo (ERA5).