Great Smoky Mountains National Park weather in August
August in Great Smoky Mountains National Park: warm, soaked, with clean air — a great time to visit.
#8 of 12 months in Great Smoky Mountains National Park · #333 of 604 destinations to visit in August · comfort 77/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Great Smoky Mountains National Park climate normals — August
| Daytime high | 25°C / 77°F | 🌤 warm |
|---|---|---|
| Nighttime low | 16°C / 61°F | |
| Feels like (high) | 27°C / 81°F | |
| Rainfall | 173 mm / 6.8 in | ⛈ soaked |
| Rainy days | 20 days | |
| Humidity | 81% | 💦 very humid |
| Dew point | 16°C / 62°F | |
| Sunshine | 10.9 h/day | |
| Daylight | 13.5 h | |
| Wind | 8 km/h / 5 mph | |
| Air quality (US AQI) | 47 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Great Smoky Mountains National Park?
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Great Smoky Mountains National Park in August — FAQ
- Is August a good time to visit Great Smoky Mountains National Park?
- August in Great Smoky Mountains National Park: warm, soaked, with clean air — a great time to visit. It ranks #8 of 12 months for Great Smoky Mountains National Park on SeasonMap's comfort score (77/100).
- What is the weather like in Great Smoky Mountains National Park in August?
- In August, Great Smoky Mountains National Park averages a daily high of 24.9°C and a low of 16.2°C, with about 172.6 mm of rain over roughly 20.4 rainy days.
- What is the air quality in Great Smoky Mountains National Park in August?
- Great Smoky Mountains National Park has a mean US Air Quality Index of about 47 in August.