Nevada · United States
Las Vegas in September
In September, Las Vegas averages a daytime high of 33 °C and a night-time low of 18 °C, with about 11 mm of rain over the month. It falls outside Las Vegas's most comfortable months, March, April, October and November.
- Average high
- 33 °C
- Average low
- 18 °C
- Rain in the month
- 11 mm
- Daylight on 15 Sep
- 12 h 20 min
- Comfortable month
- No
- Places to stay
- 70
When to go
How September compares with the rest of the year in Las Vegas
September is the 4th warmest month in Las Vegas by average daytime high; across the year the highs run from 13 °C to 39 °C and the lows from 1 °C to 24 °C. By day, September is 4 °C cooler than August, and October is 7 °C cooler than September.
September brings 11 mm of rain, less than the monthly average of 11 mm (136 mm a year); it is tied for the 5th wettest month.
On 15 September the sun is up for about 12 h 20 min, against 9 h 40 min at the shortest and 14 h 40 min at the longest point of the year (calculated from the latitude, sunrise to sunset).
| Month | High | Low | Rain | Comfortable |
|---|---|---|---|---|
| January | 13 °C | 1 °C | 21 mm | |
| February | 16 °C | 3 °C | 23 mm | |
| March | 19 °C | 6 °C | 12 mm | Yes |
| April | 24 °C | 10 °C | 8 mm | Yes |
| May | 29 °C | 15 °C | 4 mm | |
| June | 36 °C | 20 °C | 3 mm | |
| July | 39 °C | 24 °C | 10 mm | |
| August | 38 °C | 23 °C | 11 mm | |
| September | 33 °C | 18 °C | 11 mm | |
| October | 26 °C | 12 °C | 9 mm | Yes |
| November | 18 °C | 5 °C | 11 mm | Yes |
| December | 13 °C | 1 °C | 14 mm |
Comfortable means average daytime high between 18 °C and 29 °C and under 80 mm of rain in the month. Averages for 1991–2020 over the surrounding area, a grid square about 50 km across, so a coast or a nearby mountain can make the town itself warmer or cooler. Data: CRU TS v4.10, Climatic Research Unit, University of East Anglia (Open Database License).
When to go
Is September a good time to visit Las Vegas?
Not by the measure used here: the average high of 33 °C is above 29 °C. The comfortable months in Las Vegas are March, April, October and November; the nearest are April, before, and October, after.
The measure is about weather for a city stay only; it says nothing about events, school holidays or prices.
Public holidays in United States in September
Nationwide public holidays; shops and offices may close on these dates.
Where to stay
Where to stay in Las Vegas
This guide lists 70 places to stay in Las Vegas, hotels recorded in Wikidata. By straight-line distance from the centre: under 1 km, 16; 1–3 km, 14; 3–10 km, 40.
Sources: climate from CRU TS v4.10 (Climatic Research Unit, University of East Anglia; Open Database License), 1991–2020 averages; day length calculated from the latitude; public holidays from python-holidays (MIT); places to stay from each operator's own public pages and Wikidata. How this guide is made.