Las Vegas
September
Weather in Las Vegas for September 2025
Your guide to Las Vegas weather in September - trends and predictions
In general, the average temperature in Las Vegas at the beginning of September is 37.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 34.1 °F by the end of September.
With an average of 2 rainy days, Las Vegas experiences minimal rainfall in September.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
28
Dry days
2
Rainy days
0
Snow days
35°/22°
Temperatures
17 km/h
Avg max wind
23 %
Avg humidity
Las Vegas in September average weather
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  37° | 2 37° | 3 37° | 4 37° | 5 39° | 6 39° | 7 38° |
| 8 39° | 9 38° | 10 35° | 11 36° | 12 34° | 13 35° | 14 35° |
| 15 35° | 16 33° | 17 32° | 18 32° | 19 32° | 20 32° | 21 32° |
| 22 32° | 23 33° | 24 34° | 25 35° | 26 35° | 27 35° | 28 34° |
| 29 34° | 30 32° |
You can click on date
Access Las Vegas weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during September in Las Vegas
See the weather trend as well as the moving average line
September weather day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 | Sunny | 37° /24° | 2.3 mm | 9 | |
| Sept. 2 | Sunny | 37° /23° | 3.2 mm | 8 | |
| Sept. 3 | Sunny | 37° /24° | 0 mm | 9 | |
| Sept. 4 | Sunny | 37° /23° | 0 mm | 9 | |
| Sept. 5 | Sunny | 39° /25° | 0 mm | 9 | |
| Sept. 6 | Sunny | 39° /24° | 0 mm | 9 | |
| Sept. 7 | Sunny | 38° /25° | 0.5 mm | 9 | |
| Sept. 8 | Sunny | 39° /23° | 0.3 mm | 9 | |
| Sept. 9 | Sunny | 38° /25° | 0.1 mm | 9 | |
| Sept. 10 | Sunny | 35° /24° | 0.1 mm | 8 | |
| Sept. 11 | Sunny | 36° /23° | 0 mm | 9 | |
| Sept. 12 | Sunny | 34° /22° | 0.4 mm | 8 | |
| Sept. 13 | Sunny | 35° /22° | 0.2 mm | 8 | |
| Sept. 14 | Sunny | 35° /21° | 0.1 mm | 8 | |
| Sept. 15 | Sunny | 35° /20° | 0 mm | 8 | |
| Sept. 16 | Sunny | 33° /19° | 0 mm | 8 | |
| Sept. 17 | Sunny | 32° /19° | 0.1 mm | 8 | |
| Sept. 18 | Sunny | 32° /20° | 0.1 mm | 8 | |
| Sept. 19 | Sunny | 32° /18° | 0 mm | 8 | |
| Sept. 20 | Sunny | 32° /19° | 0 mm | 8 | |
| Sept. 21 | Sunny | 32° /18° | 0 mm | 8 | |
| Sept. 22 | Sunny | 32° /17° | 0 mm | 8 | |
| Sept. 23 | Sunny | 33° /18° | 0 mm | 8 | |
| Sept. 24 | Sunny | 34° /20° | 0 mm | 8 | |
| Sept. 25 | Sunny | 35° /21° | 0.2 mm | 9 | |
| Sept. 26 | Sunny | 35° /20° | 0.1 mm | 8 | |
| Sept. 27 | Sunny | 35° /21° | 0 mm | 9 | |
| Sept. 28 | Sunny | 34° /21° | 0 mm | 8 | |
| Sept. 29 | Sunny | 34° /20° | 0 mm | 8 | |
| Sept. 30 | Sunny | 32° /18° | 0.2 mm | 8 | |
| Next | |||||
Important Notice
Our weather forecast for Las Vegas in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Las Vegas forecast closer to your planned date for the most up-to-date weather information.
Las Vegas in September - FAQ
What are the expected maximum and minimum temperatures in Las Vegas during September?
With daytime temperatures soaring above 35° and not dropping much below 22° at night, September in Las Vegas is quite hot. Staying hydrated and avoiding peak sun hours is advisable.
How much rainfall should be expected in Las Vegas during September?
Rainfall in Las Vegas during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 2 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Las Vegas during September?
The average wind speed in Las Vegas during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Las Vegas
Explore the daily rainfall trends and prepare for Las Vegass September weather 💧
UV exposure in Las Vegas during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Quick links
You are here
Where is Las Vegas?Get accurate weather forecasts for Las Vegas, located at latitude 36.175 and longitude -115.137. Stay updated with localized weather information tailored for Las Vegas.
Related locations
Select a location for accurate weather forecast
More Locations Found a mistake?
We appreciate your attention to details. Tell us here.