Clark County (Las Vegas)
September
Weather in Clark County for September 2025
Your guide to Clark County weather in September - trends and predictions
In general, the average temperature in Clark County 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, Clark County experiences minimal rainfall in September.
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Temperatures
Rain 🌧️
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28
Dry days
2
Rainy days
0
Snow days
35°/22°
Temperatures
17 km/h
Avg max wind
23 %
Avg humidity
Clark County in September average weather
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| 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° |
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Temperatures trend during September in Clark County
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 | 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 | |
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Important Notice
Our weather forecast for Clark County 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 Clark County forecast closer to your planned date for the most up-to-date weather information.
Clark County in September - FAQ
What are the expected maximum and minimum temperatures in Clark County during September?
With daytime temperatures soaring above 35° and not dropping much below 22° at night, September in Clark County is quite hot. Staying hydrated and avoiding peak sun hours is advisable.
How much rainfall should be expected in Clark County during September?
Rainfall in Clark County 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 Clark County during September?
The average wind speed in Clark County during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Clark County
Explore the daily rainfall trends and prepare for Clark Countys September weather 💧
UV exposure in Clark County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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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.
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