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 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, Clark County experiences minimal rainfall in September.
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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
Clark County 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 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 | 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 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?
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 Clark County during September?
In September, Clark County 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 Clark County during September?
The average wind speed in Clark County during September is 18 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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