Deer Valley (AZ)
September
Weather in Deer Valley, Arizona for September 2026
Your guide to Deer Valley weather in September - trends and predictions
Until now, September 2026 in Deer Valley is slightly cooler than the historical average by 1.1 °F.
The forecast for the coming days of September 2026 predicts a temperature of 31.1 °F , which is warmer than usual.
In general, the average temperature in Deer Valley at the beginning of September is 39 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 30.7 °F by the end of September.
With an average of 5 rainy days, Deer Valley experiences minimal rainfall in September.
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Temperatures
Rain 🌧️
More
25
Dry days
5
Rainy days
0
Snow days
37°/25°
Temperatures
18 km/h
Avg max wind
29 %
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° /26° | 10.6 mm | 9 | |
| Sept. 2 |  Sunny | 38° /28° | 0 mm | 9 | |
| Sept. 3 | Sunny | 39° /27° | 0 mm | 9 | |
| Sept. 4 | Sunny | 39° /28° | 0.6 mm | 9 | |
| Sept. 5 | Sunny | 38° /27° | 0 mm | 9 | |
| Sept. 6 | Sunny | 39° /26° | 0 mm | 9 | |
| Sept. 7 | Sunny | 41° /27° | 0.1 mm | 9 | |
| Sept. 8 | Sunny | 41° /27° | 0 mm | 9 | |
| Sept. 9 | Sunny | 41° /28° | 0.1 mm | 10 | |
| Sept. 10 | Sunny | 41° /28° | 0 mm | 9 | |
| Sept. 11 | Sunny | 39° /28° | 0.1 mm | 9 | |
| Sept. 12 | Sunny | 37° /27° | 1.7 mm | 9 | |
| Sept. 13 | Sunny | 36° /25° | 2 mm | 8 | |
| Sept. 14 | Sunny | 37° /24° | 0.6 mm | 8 | |
| Sept. 15 | Sunny | 37° /24° | 2 mm | 8 | |
| Sept. 16 | Sunny | 36° /23° | 5.8 mm | 7 | |
| Sept. 17 |  Overcast | 34° /24° | 0.7 mm | 7 | |
| Sept. 18 | Sunny | 35° /23° | 0 mm | 9 | |
| Sept. 19 | Sunny | 36° /22° | 0 mm | 8 | |
| Sept. 20 | Overcast | 35° /23° | 0 mm | 7 | |
| Sept. 21 | Sunny | 34° /23° | 0 mm | 7 | |
| Sept. 22 |  Cloudy | 34° /22° | 5.5 mm | 7 | |
| Sept. 23 | Overcast | 37° /22° | 0 mm | 7 | |
| Sept. 24 | Sunny | 36° /22° | 2.7 mm | 7 | |
| Sept. 25 | Sunny | 38° /22° | 0.1 mm | 9 | |
| Sept. 26 | Sunny | 31° /25° | 0 mm | 7.9 | |
| Sept. 27 | Overcast | 31° /27° | 0 mm | 6.8 | |
| Sept. 28 | Patchy rain possible | 26° /19° | 6.7 mm | 7.7 | |
| Sept. 29 | Patchy rain possible | 26° /18° | 11.3 mm | 7.1 | |
| Sept. 30 | Sunny | 27° /20° | 0 mm | 6.9 | |
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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.
Change Month
Deer Valley in September - FAQ
What are the expected maximum and minimum temperatures in Deer Valley during September?
With daytime temperatures soaring above 37° and not dropping much below 25° 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 27.1 mm across approximately 5 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 18 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 💧
Typically, Deer Valley has 5 rainy days in September with a total of 27.1 mm of rainfall.
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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