Deer Valley (AZ)
September
Weather in Deer Valley, Arizona for September 2025
Your guide to Deer Valley weather in September - trends and predictions
Until now, September 2025 in Deer Valley is slightly cooler than the historical average by -0.8 °F.
The forecast for the next days in Deer Valley predicts a temperature of 33.2 °F, which is cooler than the historical average.
In general, the average temperature in Deer Valley at the beginning of September is 38.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 31.9 °F by the end of September.
With an average of 4 rainy days, Deer Valley experiences minimal rainfall in September.
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Temperatures
Rain 🌧️
More
26
Dry days
4
Rainy days
0
Snow days
38°/24°
Temperatures
17 km/h
Avg max wind
24 %
Avg humidity
Deer Valley Weather September
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Temperatures trend during September in Deer Valley
See the weather trend as well as the moving average line
September weather in Deer Valley day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Light rain shower | 39° /27° | 14.2 mm | 9 | |
| Sept. 2 |  Partly cloudy | 38° /29° | 0 mm | 9 | |
| Sept. 3 |  Sunny | 39° /27° | 0 mm | 9 | |
| Sept. 4 | Sunny | 39° /29° | 0 mm | 9 | |
| Sept. 5 | Sunny | 37° /27° | 0 mm | 9 | |
| Sept. 6 | Sunny | 39° /26° | 0 mm | 10 | |
| Sept. 7 | Sunny | 40° /27° | 0.1 mm | 9 | |
| Sept. 8 | Partly cloudy | 40° /27° | 0 mm | 9 | |
| Sept. 9 | Sunny | 41° /28° | 0 mm | 10 | |
| Sept. 10 | Sunny | 40° /28° | 0 mm | 9 | |
| Sept. 11 | Sunny | 39° /28° | 0 mm | 9 | |
| Sept. 12 | Sunny | 36° /27° | 1.2 mm | 9 | |
| Sept. 13 | Sunny | 37° /25° | 1.6 mm | 9 | |
| Sept. 14 | Sunny | 37° /24° | 0 mm | 9 | |
| Sept. 15 | Sunny | 37° /24° | 1.8 mm | 8 | |
| Sept. 16 | Sunny | 38° /23° | 0.1 mm | 9 | |
| Sept. 17 |  Cloudy | 34° /20° | 0 mm | 1.6 | |
| Sept. 18 |  Moderate rain | 33° /24° | 8.3 mm | 1.8 | |
| Sept. 19 | Moderate rain | 34° /22° | 9.2 mm | 2 | |
| Sept. 20 | Sunny | 35° /20° | 0 mm | 2 | |
| Sept. 21 | Sunny | 35° /26° | 0 mm | 0 | |
| Sept. 22 | Sunny | 35° /25° | 0 mm | 7 | |
| Sept. 23 | Sunny | 36° /26° | 0 mm | 8 | |
| Sept. 24 | Sunny | 36° /27° | 0 mm | 8 | |
| Sept. 25 | Sunny | 34° /26° | 0 mm | 8 | |
| Sept. 26 | Sunny | 34° /24° | 0 mm | 7 | |
| Sept. 27 | Sunny | 33° /24° | 0 mm | 7 | |
| Sept. 28 | Sunny | 27° /20° | 0 mm | 6 | |
| Sept. 29 | Sunny | 29° /17° | 0 mm | 6 | |
| Sept. 30 | Sunny | 30° /19° | 0 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Deer Valley 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 Deer Valley forecast closer to your planned date for the most up-to-date weather information.
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Deer Valley in September - FAQ
What are the expected maximum and minimum temperatures in Deer Valley during September?
With daytime temperatures soaring above 38° and not dropping much below 24° at night, September in Deer Valley is quite hot. Staying hydrated and avoiding peak sun hours is advisable.
How much rainfall should be expected in Deer Valley during September?
In September, Deer Valley can expect light to moderate rainfall, totaling 28.6 mm across approximately 4 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Deer Valley during September?
The average wind speed in Deer Valley during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Deer Valley
Explore the daily rainfall trends and prepare for Deer Valleys September weather 💧
UV exposure in Deer Valley during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Deer Valley?Get accurate weather forecasts for Deer Valley, located at latitude 33.684 and longitude -112.135. Stay updated with localized weather information tailored for Deer Valley.
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