Weather in Las Vegas, Nevada for September 2025
Until now, September 2025 in Las Vegas is cooler than usual, with temperatures averaging 34.5 °F, this is -2.3 °F below the typical seasonal average.
The forecast for the next days in Las Vegas predicts temperatures to be around 36 °F, close to the historical average.
In general, the average temperature in Las Vegas at the beginning of September is 37.3 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 35.3 °F by the end of September.
Precipitation in Las Vegas during September is a rare event, with an average of fewer than 2 rainy days.
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Las Vegas Weather September
Temperatures trend during September in Las Vegas
September weather in Las Vegas day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 38° /24° | 1.9 mm | 9 | |
| Sept. 2 | Sunny | 36° /24° | 2.6 mm | 8 | |
| Sept. 3 | Sunny | 37° /25° | 0 mm | 9 | |
| Sept. 4 | Sunny | 37° /23° | 0 mm | 9 | |
| Sept. 5 | Sunny | 37° /24° | 0 mm | 9 | |
| Sept. 6 | Sunny | 38° /24° | 0 mm | 9 | |
| Sept. 7 | Sunny | 38° /24° | 0.4 mm | 9 | |
| Sept. 8 | Sunny | 38° /23° | 0.2 mm | 9 | |
| Sept. 9 | Sunny | 37° /24° | 0.1 mm | 9 | |
| Sept. 10 | Sunny | 34° /22° | 0 mm | 8 | |
| Sept. 11 | Sunny | 35° /22° | 0 mm | 9 | |
| Sept. 12 | Sunny | 33° /21° | 0.3 mm | 8 | |
| Sept. 13 | Sunny | 35° /20° | 0 mm | 1.8 | |
| Sept. 14 | Sunny | 35° /20° | 0 mm | 1.9 | |
| Sept. 15 | Sunny | 36° /19° | 0 mm | 1.9 | |
| Sept. 16 | Sunny | 35° /22° | 0 mm | 1.9 | |
| Sept. 17 | Sunny | 36° /23° | 0 mm | 0 | |
| Sept. 18 | Sunny | 36° /24° | 0 mm | 8 | |
| Sept. 19 |  Patchy rain possible | 35° /26° | 0.1 mm | 7 | |
| Sept. 20 | Patchy rain possible | 34° /27° | 0.4 mm | 6 | |
| Sept. 21 |  Partly cloudy | 34° /27° | 0 mm | 8 | |
| Sept. 22 | Sunny | 36° /26° | 0 mm | 8 | |
| Sept. 23 | Sunny | 36° /25° | 0 mm | 8 | |
| Sept. 24 | Sunny | 37° /24° | 0 mm | 8 | |
| Sept. 25 | Sunny | 38° /25° | 0 mm | 8 | |
| Sept. 26 | Sunny | 37° /23° | 0 mm | 7 | |
| 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 | |
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Las Vegas in September - FAQ
September rainfall patterns in Las Vegas
UV exposure in Las Vegas during September
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