Badlands National Park weather in May
May in Badlands National Park: nice, rainy, with clean air — one of the best months to visit.
#1 of 12 months in Badlands National Park · #93 of 604 destinations to visit in May · comfort 89/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Badlands National Park climate normals — May
| Daytime high | 21°C / 69°F | 😎 nice |
|---|---|---|
| Nighttime low | 8°C / 47°F | |
| Feels like (high) | 18°C / 64°F | |
| Rainfall | 94 mm / 3.7 in | 🌧 rainy |
| Rainy days | 11 days | |
| Humidity | 61% | 💧 humid |
| Dew point | 7°C / 45°F | |
| Sunshine | 10.7 h/day | |
| Daylight | 14.7 h | |
| Wind | 25 km/h / 16 mph | |
| Snowfall | 1.2 cm / 0.5 in | |
| Air quality (US AQI) | 46 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Badlands National Park?
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Badlands National Park in May — FAQ
- Is May a good time to visit Badlands National Park?
- May in Badlands National Park: nice, rainy, with clean air — one of the best months to visit. It ranks #1 of 12 months for Badlands National Park on SeasonMap's comfort score (89/100).
- What is the weather like in Badlands National Park in May?
- In May, Badlands National Park averages a daily high of 20.5°C and a low of 8.1°C, with about 94 mm of rain over roughly 11.4 rainy days.
- What is the air quality in Badlands National Park in May?
- Badlands National Park has a mean US Air Quality Index of about 46 in May.
- Does it snow in Badlands National Park in May?
- Badlands National Park sees roughly 1.2 cm of snowfall in May.