Joshua Tree National Park weather in December
December in Joshua Tree National Park: cool, dry, with clean air — a great time to visit.
#7 of 12 months in Joshua Tree National Park · #188 of 604 destinations to visit in December · comfort 78/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Joshua Tree National Park climate normals — December
| Daytime high | 16°C / 61°F | 🙂 cool |
|---|---|---|
| Nighttime low | 6°C / 43°F | |
| Feels like (high) | 13°C / 55°F | |
| Rainfall | 19 mm / 0.7 in | ☀️ dry |
| Rainy days | 2 days | |
| Humidity | 45% | 🍃 comfortable |
| Dew point | -2°C / 29°F | |
| Sunshine | 8.1 h/day | |
| Daylight | 9.9 h | |
| Wind | 10 km/h / 6 mph | |
| Snowfall | 0.1 cm / 0 in | |
| Air quality (US AQI) | 31 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Joshua Tree National Park in December — FAQ
- Is December a good time to visit Joshua Tree National Park?
- December in Joshua Tree National Park: cool, dry, with clean air — a great time to visit. It ranks #7 of 12 months for Joshua Tree National Park on SeasonMap's comfort score (78/100).
- What is the weather like in Joshua Tree National Park in December?
- In December, Joshua Tree National Park averages a daily high of 16.2°C and a low of 6.1°C, with about 18.5 mm of rain over roughly 2.2 rainy days.
- What is the air quality in Joshua Tree National Park in December?
- Joshua Tree National Park has a mean US Air Quality Index of about 31 in December.