Weather in Clark County, Nevada for September 2025
Until now, September 2025 in Clark County is cooler than usual, with temperatures averaging 34.1 °F, this is -2.2 °F below the typical seasonal average.
The forecast for the next days in Clark County predicts temperatures to be around 36 °F, close to the historical average.
In general, the average temperature in Clark County at the beginning of September is 37.3 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 35.4 °F by the end of September.
Precipitation in Clark County during September is a rare event, with an average of fewer than 2 rainy days.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
Clark County Weather September
Temperatures trend during September in Clark County
September weather in Clark County 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 | 34° /21° | 0.1 mm | 8 | |
| Sept. 14 | Sunny | 35° /21° | 0.1 mm | 8 | |
| Sept. 15 | Sunny | 37° /20° | 0 mm | 1.9 | |
| Sept. 16 | Sunny | 37° /20° | 0 mm | 1.9 | |
| Sept. 17 | Sunny | 38° /21° | 0 mm | 1.8 | |
| Sept. 18 |  Patchy rain possible | 33° /24° | 1.4 mm | 1.7 | |
| Sept. 19 |  Moderate rain | 34° /24° | 7.5 mm | 0 | |
| Sept. 20 | Sunny | 34° /25° | 0 mm | 7 | |
| Sept. 21 | Sunny | 34° /23° | 0 mm | 7 | |
| Sept. 22 | Sunny | 36° /25° | 0 mm | 8 | |
| Sept. 23 | Sunny | 37° /26° | 0 mm | 8 | |
| Sept. 24 | Sunny | 39° /26° | 0 mm | 8 | |
| Sept. 25 | Sunny | 38° /26° | 0 mm | 8 | |
| Sept. 26 | Sunny | 36° /25° | 0 mm | 8 | |
| Sept. 27 | Sunny | 34° /23° | 0 mm | 7 | |
| Sept. 28 | Sunny | 35° /23° | 0 mm | 7 | |
| Sept. 29 | Sunny | 34° /20° | 0 mm | 8 | |
| Sept. 30 | Sunny | 32° /18° | 0.2 mm | 8 | |
| Next | |||||
Clark County in September - FAQ
September rainfall patterns in Clark County
UV exposure in Clark County during September
Quick links
Where is Clark County?Get accurate weather forecasts for Clark County, located at latitude 36.175 and longitude -115.137. Stay updated with localized weather information tailored for Clark County.