Las Vegas, Nevada weather in August

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

Average high: 103°F
Average low: 79°F
Rainy days: ~3 per month
Total precipitation: 0.9 in
Warmest recorded: 113°F
Coldest recorded: 69°F

Expect August days in Las Vegas, Nevada to top out around 103°F and cool to about 79°F overnight, with roughly 3 days of measurable rain across the month. In recent years August has ranged from 69°F to 113°F.

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