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 35.4 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 34.7 °F by the end of September.
With an average of 4 rainy days, Las Vegas experiences minimal rainfall in September, ensuring that most days remain pleasantly dry.
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26
Dry days
4
Rainy days
0
Snow days
33°/20°
Temperatures
18 km/h
Avg max wind
29 %
Avg humidity
Las Vegas in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  36° | 2  35° | 3  35° | 4  35° | 5 36° | 6 36° | 7 35° |
| 8 36° | 9 37° | 10 37° | 11 36° | 12 32° | 13 34° | 14  34° |
| 15 34° | 16 30° | 17 30° | 18 30° | 19 31° | 20 31° | 21 31° |
| 22  30° | 23 32° | 24 34° | 25 35° | 26 35° | 27 36° | 28 36° |
| 29 35° | 30  32° |
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Temperatures trend during September in Las Vegas
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 | Moderate or heavy rain shower | 36° /23° | 4.6 mm | 9 | |
| Sept. 2 | Light rain shower | 35° /22° | 6.3 mm | 8 | |
| Sept. 3 | Cloudy | 35° /23° | 0.1 mm | 8 | |
| Sept. 4 | Sunny | 35° /21° | 0 mm | 9 | |
| Sept. 5 | Sunny | 36° /23° | 0 mm | 9 | |
| Sept. 6 | Sunny | 36° /23° | 0 mm | 9 | |
| Sept. 7 | Sunny | 35° /24° | 0.4 mm | 8 | |
| Sept. 8 | Sunny | 36° /21° | 0.4 mm | 9 | |
| Sept. 9 | Sunny | 37° /24° | 0.1 mm | 9 | |
| Sept. 10 | Cloudy | 37° /24° | 0 mm | 9 | |
| Sept. 11 | Sunny | 36° /22° | 0 mm | 9 | |
| Sept. 12 | Light rain shower | 32° /21° | 0.6 mm | 8 | |
| Sept. 13 | Sunny | 34° /20° | 0 mm | 8 | |
| Sept. 14 | Partly cloudy | 34° /21° | 0 mm | 8 | |
| Sept. 15 | Sunny | 34° /20° | 0 mm | 8 | |
| Sept. 16 | Sunny | 30° /19° | 0 mm | 8 | |
| Sept. 17 | Sunny | 30° /17° | 0 mm | 8 | |
| Sept. 18 | Sunny | 30° /18° | 0 mm | 7 | |
| Sept. 19 | Sunny | 31° /18° | 0 mm | 8 | |
| Sept. 20 | Sunny | 31° /18° | 0 mm | 8 | |
| Sept. 21 | Sunny | 31° /18° | 0 mm | 8 | |
| Sept. 22 | Overcast | 30° /16° | 0 mm | 7 | |
| Sept. 23 | Cloudy | 32° /19° | 0 mm | 8 | |
| Sept. 24 | Sunny | 34° /19° | 0 mm | 9 | |
| Sept. 25 | Sunny | 35° /21° | 0 mm | 9 | |
| Sept. 26 | Sunny | 35° /20° | 0 mm | 9 | |
| Sept. 27 | Sunny | 36° /21° | 0 mm | 9 | |
| Sept. 28 | Sunny | 36° /22° | 0 mm | 9 | |
| Sept. 29 | Sunny | 35° /20° | 0 mm | 8 | |
| Sept. 30 | Patchy light rain with thunder | 32° /19° | 0.4 mm | 8 | |
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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?
Expect warm days with temperatures around 33°, cooling to mild conditions of 20° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Las Vegas during September?
In September, Las Vegas can expect light to moderate rainfall, totaling 23.8 mm across approximately 4 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Las Vegas during September?
The average wind speed in Las Vegas during September is 18 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 ☀️
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