Sierra Vista (AZ)
September
Weather in Sierra Vista, Arizona for September 2026
Your guide to Sierra Vista weather in September - trends and predictions
So far, September 2026 in Sierra Vista is slightly warmer than the historical average by 2 °F.
The forecast for the next days in Sierra Vista predicts temperatures to be around 30 °F, close to the historical average.
In general, the average temperature in Sierra Vista at the beginning of September is 29.1 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 26.4 °F by the end of September.
The climate of Sierra Vista in September is notably wet, with an average of 13 rainy days, and a total of 470.9 mm of precipitation.
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Temperatures
Rain 🌧️
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17
Dry days
13
Rainy days
0
Snow days
27°/17°
Temperatures
19 km/h
Avg max wind
64 %
Avg humidity
Sierra Vista Weather September
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Temperatures trend during September in Sierra Vista
See the weather trend as well as the moving average line
September weather in Sierra Vista day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Thundery outbreaks possible | 29° /17° | 0 mm | 10 | |
| Sept. 2 | Thundery outbreaks possible | 31° /19° | 19.5 mm | 10 | |
| Sept. 3 |  Overcast | 29° /17° | 10.1 mm | 8 | |
| Sept. 4 | Thundery outbreaks possible | 30° /18° | 1.8 mm | 8 | |
| Sept. 5 |  Heavy rain | 24° /17° | 96.4 mm | 4 | |
| Sept. 6 |  Light rain shower | 30° /19° | 7.1 mm | 10 | |
| Sept. 7 |  Fog | 31° /18° | 3.2 mm | 6 | |
| Sept. 8 |  Partly cloudy | 33° /19° | 0.7 mm | 8 | |
| Sept. 9 |  Cloudy | 32° /20° | 1.1 mm | 7 | |
| Sept. 10 | Heavy rain | 31° /19° | 755 mm | 10 | |
| Sept. 11 |  Sunny | 30° /20° | 2.5 mm | 10.3 | |
| Sept. 12 | Light rain shower | 30° /20° | 35.2 mm | 10.2 | |
| Sept. 13 | Sunny | 30° /19° | 0.1 mm | 10.2 | |
| Sept. 14 | Sunny | 30° /19° | 5 mm | 7 | |
| Sept. 15 | Light rain shower | 28° /19° | 10.6 mm | 6 | |
| Sept. 16 | Light rain shower | 29° /18° | 8.1 mm | 7 | |
| Sept. 17 | Overcast | 30° /19° | 0.9 mm | 7 | |
| Sept. 18 | Sunny | 31° /20° | 0 mm | 8 | |
| Sept. 19 | Sunny | 31° /22° | 0.5 mm | 8 | |
| Sept. 20 | Light rain shower | 29° /17° | 13 mm | 7 | |
| Sept. 21 | Overcast | 27° /18° | 10.4 mm | 7 | |
| Sept. 22 | Sunny | 29° /18° | 2.4 mm | 7 | |
| Sept. 23 | Sunny | 28° /18° | 1.3 mm | 7 | |
| Sept. 24 |  Patchy light rain with thunder | 31° /20° | 6.8 mm | 9 | |
| Sept. 25 | Torrential rain shower | 28° /16° | 67.1 mm | 8 | |
| Sept. 26 |  Moderate or heavy rain shower | 22° /15° | 121.4 mm | 2 | |
| Sept. 27 | Thundery outbreaks possible | 24° /14° | 0 mm | 9 | |
| Sept. 28 | Thundery outbreaks possible | 26° /13° | 0 mm | 8 | |
| Sept. 29 | Partly cloudy | 27° /14° | 0 mm | 8 | |
| Sept. 30 | Mist | 27° /15° | 0 mm | 8 | |
| Next | |||||
Important Notice
Our weather forecast for Sierra Vista 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 Sierra Vista forecast closer to your planned date for the most up-to-date weather information.
Change Month
Sierra Vista in September - FAQ
What are the expected maximum and minimum temperatures in Sierra Vista during September?
During September, expect a variety of temperatures with highs around 27° and lows near 17°, suitable for diverse activities and preferences.
How much rainfall should be expected in Sierra Vista during September?
Significant rainfall exceeding 470.9 mm is expected in Sierra Vista during September, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Sierra Vista during September?
The average wind speed in Sierra Vista during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Sierra Vista
Explore the daily rainfall trends and prepare for Sierra Vistas September weather 💧
Typically, Sierra Vista has 13 rainy days in September with a total of 470.9 mm of rainfall.
UV exposure in Sierra Vista during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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