Las Vegas, Nevada weather in December

Averages from 2021–2025 (155 days of record).

Average high: 60°F
Average low: 40°F
Rainy days: ~3 per month
Total precipitation: 0.5 in
Warmest recorded: 74°F
Coldest recorded: 27°F

Expect December days in Las Vegas, Nevada to top out around 60°F and cool to about 40°F overnight, with roughly 3 days of measurable rain across the month. In recent years December has ranged from 27°F to 74°F.

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Current Las Vegas, Nevada forecast → · Historical data by Open-Meteo (ERA5).