Tucson
September
Weather in Tucson for September 2025
Your guide to Tucson weather in September - trends and predictions
In general, the average temperature in Tucson at the beginning of September is 36.4 °F. As the month progressed, temperatures tended to noticeably warm up, reaching an average of 38.6 °F by the end of September.
With an average of 4 rainy days, Tucson experiences minimal rainfall in September.
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26
Dry days
4
Rainy days
0
Snow days
38°/19°
Temperatures
22 km/h
Avg max wind
28 %
Avg humidity
Tucson in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  34° | 2  35° | 3  36° | 4 37° | 5 38° | 6 38° | 7  37° |
| 8 37° | 9 39° | 10 40° | 11  38° | 12 35° | 13  35° | 14 35° |
| 15 35° | 16 35° | 17 36° | 18 35° | 19 35° | 20  34° | 21 33° |
| 22 34° | 23 36° | 24 36° | 25 39° | 26 40° | 27 40° | 28 38° |
| 29 39° | 30 38° |
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Temperatures trend during September in Tucson
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 | Thundery outbreaks possible | 34° /22° | 0.6 mm | 8 | |
| Sept. 2 | Patchy rain possible | 35° /21° | 0.8 mm | 8 | |
| Sept. 3 | Sunny | 36° /22° | 0 mm | 9 | |
| Sept. 4 | Sunny | 37° /22° | 0 mm | 9 | |
| Sept. 5 | Sunny | 38° /21° | 0 mm | 9 | |
| Sept. 6 | Sunny | 38° /22° | 0 mm | 10 | |
| Sept. 7 | Partly cloudy | 37° /23° | 0 mm | 9 | |
| Sept. 8 | Sunny | 37° /23° | 0 mm | 9 | |
| Sept. 9 | Sunny | 39° /23° | 0 mm | 10 | |
| Sept. 10 | Partly cloudy | 40° /23° | 0 mm | 10 | |
| Sept. 11 | Cloudy | 38° /24° | 0.2 mm | 9 | |
| Sept. 12 | Thundery outbreaks possible | 35° /23° | 0 mm | 9 | |
| Sept. 13 | Moderate or heavy rain shower | 35° /22° | 2.3 mm | 8 | |
| Sept. 14 | Sunny | 35° /21° | 1.3 mm | 8 | |
| Sept. 15 | Sunny | 35° /20° | 1.9 mm | 8 | |
| Sept. 16 | Sunny | 35° /19° | 3.9 mm | 8 | |
| Sept. 17 | Partly cloudy | 36° /18° | 0 mm | 8 | |
| Sept. 18 | Sunny | 35° /17° | 0 mm | 9 | |
| Sept. 19 | Sunny | 35° /15° | 0 mm | 9 | |
| Sept. 20 | Overcast | 34° /15° | 0 mm | 8 | |
| Sept. 21 | Sunny | 33° /14° | 0 mm | 8 | |
| Sept. 22 | Partly cloudy | 34° /13° | 0 mm | 8 | |
| Sept. 23 | Sunny | 36° /15° | 0 mm | 9 | |
| Sept. 24 | Sunny | 36° /16° | 0 mm | 9 | |
| Sept. 25 | Sunny | 39° /18° | 0 mm | 9 | |
| Sept. 26 | Sunny | 40° /19° | 0 mm | 10 | |
| Sept. 27 | Sunny | 40° /18° | 0 mm | 10 | |
| Sept. 28 | Overcast | 38° /19° | 0 mm | 9 | |
| Sept. 29 | Sunny | 39° /18° | 0 mm | 9 | |
| Sept. 30 | Sunny | 38° /16° | 0 mm | 9 | |
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Important Notice
Our weather forecast for Tucson 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 Tucson forecast closer to your planned date for the most up-to-date weather information.
Tucson in September - FAQ
What are the expected maximum and minimum temperatures in Tucson during September?
Expect warm days with temperatures around 38°, cooling to mild conditions of 19° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Tucson during September?
Rainfall in Tucson during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 4 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Tucson during September?
The average wind speed in Tucson during September is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Tucson
Explore the daily rainfall trends and prepare for Tucsons September weather 💧
UV exposure in Tucson during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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