Will I be hot?
Will I be hot in Las Vegas in August?
Verdict
Yes — Yes, hot.
Highs push 103°F — sun exposure and hydration matter more than layering.
Day vs. night
Day
103°F
Sweltering
Plan indoor hours around the peak of the day.
Night
79°F
Warm
Still warm enough for a T-shirt after dark.
Why
Las Vegas in August averages highs of 103°F, lows of 79°F, 3 rainy days.
Prioritize breathable fabrics, sun protection, and hydration over any kind of layering piece.