Tempe (AZ)
September
Weather in Tempe, Arizona for September 2026
Your guide to Tempe weather in September - trends and predictions
Until now, September 2026 in Tempe is slightly cooler than the historical average by 0.9 °F.
The forecast for the coming days of September 2026 predicts a temperature of 33.3 °F , which is warmer than usual.
In general, the average temperature in Tempe at the beginning of September is 39.9 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 33.1 °F by the end of September.
Tempe experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 17.4 mm.
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Temperatures
Rain 🌧️
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24
Dry days
6
Rainy days
0
Snow days
38°/26°
Temperatures
17 km/h
Avg max wind
28 %
Avg humidity
Tempe Weather September
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Temperatures trend during September in Tempe
See the weather trend as well as the moving average line
September weather in Tempe day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Patchy light rain with thunder | 39° /27° | 4.9 mm | 9 | |
| Sept. 2 |  Sunny | 40° /28° | 3.9 mm | 9 | |
| Sept. 3 | Sunny | 40° /28° | 0 mm | 10 | |
| Sept. 4 | Sunny | 40° /29° | 0.8 mm | 9 | |
| Sept. 5 | Sunny | 38° /27° | 0 mm | 8 | |
| Sept. 6 | Sunny | 40° /27° | 0 mm | 9 | |
| Sept. 7 | Sunny | 42° /28° | 0 mm | 10 | |
| Sept. 8 | Sunny | 42° /28° | 0 mm | 10 | |
| Sept. 9 | Sunny | 42° /28° | 0.1 mm | 10 | |
| Sept. 10 | Sunny | 41° /29° | 0.1 mm | 9 | |
| Sept. 11 | Sunny | 39° /29° | 0.9 mm | 9 | |
| Sept. 12 |  Thundery outbreaks possible | 37° /27° | 1.9 mm | 8 | |
| Sept. 13 | Sunny | 37° /26° | 1 mm | 8 | |
| Sept. 14 | Sunny | 38° /25° | 0.6 mm | 8 | |
| Sept. 15 | Sunny | 37° /25° | 2.5 mm | 7 | |
| Sept. 16 | Sunny | 37° /25° | 6.7 mm | 7 | |
| Sept. 17 |  Partly cloudy | 35° /25° | 0.9 mm | 7 | |
| Sept. 18 | Sunny | 36° /25° | 0 mm | 8 | |
| Sept. 19 | Sunny | 38° /24° | 0 mm | 8 | |
| Sept. 20 |  Overcast | 37° /25° | 0 mm | 8 | |
| Sept. 21 | Overcast | 35° /24° | 0.9 mm | 7 | |
| Sept. 22 | Partly cloudy | 35° /24° | 1.9 mm | 7 | |
| Sept. 23 | Sunny | 37° /24° | 0 mm | 7 | |
| Sept. 24 | Sunny | 37° /24° | 4.1 mm | 8 | |
| Sept. 25 | Sunny | 39° /24° | 0 mm | 9 | |
| Sept. 26 | Sunny | 34° /27° | 0 mm | 8 | |
| Sept. 27 | Overcast | 34° /26° | 1.2 mm | 6.8 | |
| Sept. 28 | Overcast | 28° /23° | 2.8 mm | 6.8 | |
| Sept. 29 | Sunny | 30° /23° | 1.4 mm | 7.2 | |
| Sept. 30 | Sunny | 30° /24° | 0 mm | 6.9 | |
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Important Notice
Our weather forecast for Tempe 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 Tempe forecast closer to your planned date for the most up-to-date weather information.
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Tempe in September - FAQ
What are the expected maximum and minimum temperatures in Tempe during September?
With daytime temperatures soaring above 38° and not dropping much below 26° at night, September in Tempe is quite hot. Staying hydrated and avoiding peak sun hours is advisable.
How much rainfall should be expected in Tempe during September?
Expect minimal rainfall in Tempe during September, with a total of 17.4 mm over approximately 6 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Tempe during September?
The average wind speed in Tempe during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Tempe
Explore the daily rainfall trends and prepare for Tempes September weather 💧
Typically, Tempe has 6 rainy days in September with a total of 17.4 mm of rainfall.
UV exposure in Tempe during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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