Will I be cold?
Will I be cold in Las Vegas in June?
Verdict
No — No, comfortable.
Lows stay near 76°F — you won't be reaching for the puffer.
Day vs. night
Day
99°F
Sweltering
Plan indoor hours around the peak of the day.
Night
76°F
Warm
Still warm enough for a T-shirt after dark.
Why
Las Vegas in June averages highs of 99°F, lows of 76°F, 1 rainy days.
You can pack for the daytime temps and not worry about the evening dip.