Verdict: Good month
Las Vegas Weather in September
September is seriously hot in Las Vegas — days average 36°C (97°F), so plan mornings out and afternoons in the shade or the water. Rain is a non-issue, with only ~1 wet day in an average year. Overall, September is a solid month to visit Las Vegas.
Average high
36°C / 97°F
Average low
23°C / 73°F
Rain days
~1
Precipitation
13 mm
What to pack for Las Vegas in September
- Light, breathable clothing — linen and technical fabrics earn their keep
- High-SPF sunscreen, sunglasses, and a refillable water bottle
- Comfortable walking shoes — every guide on this site assumes you'll use them
September against the rest of the year
Warmest in Las Vegas: Jul (42°C / 108°F) · Coolest: Jan (14°C / 57°F) · Wettest: Mar (~5 rain days)
14°
4°
Jan
17°
5°
Feb
20°
9°
Mar
27°
14°
Apr
32°
19°
May
38°
24°
Jun
42°
28°
Jul
40°
27°
Aug
36°
23°
Sep
29°
16°
Oct
19°
8°
Nov
15°
4°
Dec
Daily highs / lows in °C · bars show rain days per month · ERA5 climate normals (2020–2024)