Weather in Las Vegas in September 2025
Average weather
Average temperature in Las Vegas in September
The temperature in September is +93°F on average, with a range between a maximum of +106°F during the day and a minimum of +61°F at night.
The average maximum temperature goes down 28% by the end of the month, compared with the beginning of the month, from +106°F to +93°F.
Is Las Vegas warm or cold in September?
Las Vegas is typically hot in September.
Maximum temperatures go down compared to the previous month from +102°F to +95°F. The minimum temperature also goes down from +79°F to +72°F.
Make sure that you pack your summer linen and swimming costumes; it’s probably going to be hot.
Take a look at how September is compared to other months in Las Vegas:
Climate in Las Vegas in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +102°F | +95°F | +82°F | ||||
| Min. temperature | ||||||
| +64°F | +48°F | +36°F | ||||
| Max. temperature | ||||||
| +113°F | +113°F | +100°F | ||||
| Rainfall | ||||||
| 18 mm | 12 mm | 10 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 25% | 24% | 28% | ||||
| Air pressure | ||||||
| 1011 HPa | 1011 HPa | 1013 HPa | ||||
| Sunny days | ||||||
| 20 | 22 | 23 | ||||
| Cloudy days | ||||||
| 2 | 2 | 4 | ||||
| Rainy days | ||||||
| 5 | 3 | 3 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as good as in August. It’s getting colder in September. From +102°F in the day, the average maximum temperature lowers to +95°F. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 18 mm to 12 mm. It feels drier, as humidity decreases from 25% to 24%. The average wind speed doesn’t change much during September, staying around 3 m/s. The good news is there are likely to be more sunny days in September, from 20 to 22.
October brings much the same weather, it remains good.
Wind
The average wind speed is 5 m/s getting up to 12 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Las Vegas is gradually increasing during September, going from 9 m/s to 12 m/s over the course of the month.
Rain
How was the weather last September in Las Vegas?
Climate Change Over the Years
The climate in Las Vegas in September has not changed that much over the last 43 years.
The average temperature was the lowest in 1982 (+77°F) and the highest in 2020 (+84°F). The driest year was 2002 with only 45 mm of rainfall, and the wettest year was 2019 with 306 mm.
FAQ
Is September a good time to visit Las Vegas?
Can you sunbathe in Las Vegas in September?
Is Las Vegas rainy in September?
Is it sunny in Las Vegas in September?
Other cities in USA
Monthly weather in Las Vegas
Source of the data
For this page, we’ve looked at the typical weather in Las Vegas, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.