Dallas weather in August
August in Dallas: sweltering, a little rain — a fair time to visit.
#12 of 12 months in Dallas · #493 of 604 destinations to visit in August · comfort 59/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Dallas climate normals — August
| Daytime high | 36°C / 96°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 26°C / 80°F | |
| Feels like (high) | 39°C / 102°F | |
| Rainfall | 60 mm / 2.4 in | 🌦 some rain |
| Rainy days | 5 days | |
| Humidity | 51% | 🍃 comfortable |
| Dew point | 19°C / 67°F | |
| Sunshine | 11.8 h/day | |
| Daylight | 13.3 h | |
| Wind | 17 km/h / 10 mph | |
| Air quality (US AQI) | 65 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Dallas in August — FAQ
- Is August a good time to visit Dallas?
- August in Dallas: sweltering, a little rain — a fair time to visit. It ranks #12 of 12 months for Dallas on SeasonMap's comfort score (59/100).
- What is the weather like in Dallas in August?
- In August, Dallas averages a daily high of 35.7°C and a low of 26.4°C, with about 60.3 mm of rain over roughly 5 rainy days.
- What is the air quality in Dallas in August?
- Dallas has a mean US Air Quality Index of about 65 in August.