Big Bend National Park weather in December
December in Big Bend National Park: cool, dry, with clean air — an excellent time to visit.
#5 of 12 months in Big Bend National Park · #47 of 604 destinations to visit in December · comfort 87/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Big Bend National Park climate normals — December
| Daytime high | 18°C / 65°F | 🙂 cool |
|---|---|---|
| Nighttime low | 5°C / 40°F | |
| Feels like (high) | 15°C / 59°F | |
| Rainfall | 9 mm / 0.4 in | ☀️ dry |
| Rainy days | 1 days | |
| Humidity | 48% | 🍃 comfortable |
| Dew point | -2°C / 28°F | |
| Sunshine | 9.1 h/day | |
| Daylight | 10.3 h | |
| Wind | 11 km/h / 7 mph | |
| Snowfall | 2.8 cm / 1.1 in | |
| Air quality (US AQI) | 32 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Big Bend National Park in December — FAQ
- Is December a good time to visit Big Bend National Park?
- December in Big Bend National Park: cool, dry, with clean air — an excellent time to visit. It ranks #5 of 12 months for Big Bend National Park on SeasonMap's comfort score (87/100).
- What is the weather like in Big Bend National Park in December?
- In December, Big Bend National Park averages a daily high of 18.2°C and a low of 4.5°C, with about 9.2 mm of rain over roughly 1.4 rainy days.
- What is the air quality in Big Bend National Park in December?
- Big Bend National Park has a mean US Air Quality Index of about 32 in December.
- Does it snow in Big Bend National Park in December?
- Big Bend National Park sees roughly 2.8 cm of snowfall in December.