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Nevada United States

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, ensuring that most days remain pleasantly dry.

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Average dry days
26
Dry days
Average rainy days
4
Rainy days
Average snowy days
0
Snow days
Average temperatures
33°/20°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
29 %
Avg humidity

Clark County in September average weather

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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
Moderate or heavy rain shower
36° /23° 4.6 mm 9
Sept. 2 Light rain shower
Light rain shower
35° /22° 6.3 mm 8
Sept. 3 Cloudy
Cloudy
35° /23° 0.1 mm 8
Sept. 4 Sunny
Sunny
35° /21° 0 mm 9
Sept. 5 Sunny
Sunny
36° /23° 0 mm 9
Sept. 6 Sunny
Sunny
36° /23° 0 mm 9
Sept. 7 Sunny
Sunny
35° /24° 0.4 mm 8
Sept. 8 Sunny
Sunny
36° /21° 0.4 mm 9
Sept. 9 Sunny
Sunny
37° /24° 0.1 mm 9
Sept. 10 Cloudy
Cloudy
37° /24° 0 mm 9
Sept. 11 Sunny
Sunny
36° /22° 0 mm 9
Sept. 12 Light rain shower
Light rain shower
32° /21° 0.6 mm 8
Sept. 13 Sunny
Sunny
34° /20° 0 mm 8
Sept. 14 Partly cloudy
Partly cloudy
34° /21° 0 mm 8
Sept. 15 Sunny
Sunny
34° /20° 0 mm 8
Sept. 16 Sunny
Sunny
30° /19° 0 mm 8
Sept. 17 Sunny
Sunny
30° /17° 0 mm 8
Sept. 18 Sunny
Sunny
30° /18° 0 mm 7
Sept. 19 Sunny
Sunny
31° /18° 0 mm 8
Sept. 20 Sunny
Sunny
31° /18° 0 mm 8
Sept. 21 Sunny
Sunny
31° /18° 0 mm 8
Sept. 22 Overcast
Overcast
30° /16° 0 mm 7
Sept. 23 Cloudy
Cloudy
32° /19° 0 mm 8
Sept. 24 Sunny
Sunny
34° /19° 0 mm 9
Sept. 25 Sunny
Sunny
35° /21° 0 mm 9
Sept. 26 Sunny
Sunny
35° /20° 0 mm 9
Sept. 27 Sunny
Sunny
36° /21° 0 mm 9
Sept. 28 Sunny
Sunny
36° /22° 0 mm 9
Sept. 29 Sunny
Sunny
35° /20° 0 mm 8
Sept. 30 Patchy light rain with thunder
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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Location coordinates 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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