Las Vegas weather in December
December in Las Vegas: cool, dry, with clean air — a great time to visit.
#7 of 12 months in Las Vegas · #231 of 604 destinations to visit in December · comfort 75/100 (tier B)
Updated June 2026 · climate normals from ERA5 reanalysis
Las Vegas climate normals — December
| Daytime high | 14°C / 58°F | 🙂 cool |
|---|---|---|
| Nighttime low | 4°C / 40°F | |
| Feels like (high) | 11°C / 52°F | |
| Rainfall | 16 mm / 0.6 in | ☀️ dry |
| Rainy days | 4 days | |
| Humidity | 43% | 🍃 comfortable |
| Dew point | -4°C / 26°F | |
| Sunshine | 7.9 h/day | |
| Daylight | 9.7 h | |
| Wind | 12 km/h / 7 mph | |
| Snowfall | 0.3 cm / 0.1 in | |
| Air quality (US AQI) | 44 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Las Vegas in December — FAQ
- Is December a good time to visit Las Vegas?
- December in Las Vegas: cool, dry, with clean air — a great time to visit. It ranks #7 of 12 months for Las Vegas on SeasonMap's comfort score (75/100).
- What is the weather like in Las Vegas in December?
- In December, Las Vegas averages a daily high of 14.2°C and a low of 4.4°C, with about 16.4 mm of rain over roughly 3.8 rainy days.
- What is the air quality in Las Vegas in December?
- Las Vegas has a mean US Air Quality Index of about 44 in December.