Weather in Pima County, Arizona for September 2026
Until now, September 2026 in Pima County has been nearly identical to the historical average, with a temperature of 35.4 °F (showing only a slight deviation of 0.5 °F).
The forecast for the next days in Pima County predicts temperatures to be around 29 °F, close to the historical average.
In general, the average temperature in Pima County at the beginning of September is 35.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 28.4 °F by the end of September.
The climate of Pima County in September is notably wet, with an average of 12 rainy days, and a total of 69.1 mm of precipitation.
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Pima County Weather September
Temperatures trend during September in Pima County
September weather in Pima County day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Thundery outbreaks possible | 36° /22° | 0.3 mm | 9 | |
| Sept. 2 |  Sunny | 35° /22° | 0.4 mm | 9 | |
| Sept. 3 | Sunny | 36° /21° | 6.2 mm | 9 | |
| Sept. 4 | Sunny | 35° /22° | 1.6 mm | 9 | |
| Sept. 5 | Sunny | 34° /21° | 17.4 mm | 8 | |
| Sept. 6 | Sunny | 37° /21° | 1.5 mm | 9 | |
| Sept. 7 | Sunny | 37° /23° | 0 mm | 8 | |
| Sept. 8 | Sunny | 38° /23° | 0 mm | 8 | |
| Sept. 9 | Sunny | 39° /23° | 0 mm | 8 | |
| Sept. 10 |  Partly cloudy | 40° /23° | 0 mm | 10 | |
| Sept. 11 |  Cloudy | 37° /23° | 1.9 mm | 9 | |
| Sept. 12 | Thundery outbreaks possible | 35° /23° | 2.3 mm | 8 | |
| Sept. 13 |  Moderate or heavy rain shower | 34° /22° | 1.5 mm | 8 | |
| Sept. 14 | Sunny | 35° /21° | 1.8 mm | 8 | |
| Sept. 15 | Sunny | 34° /21° | 1 mm | 7 | |
| Sept. 16 | Sunny | 33° /20° | 12.4 mm | 6 | |
| Sept. 17 | Partly cloudy | 33° /19° | 0.2 mm | 7 | |
| Sept. 18 | Sunny | 32° /24° | 0.1 mm | 9.4 | |
| Sept. 19 | Sunny | 32° /25° | 0 mm | 9.3 | |
| Sept. 20 | Sunny | 31° /24° | 0 mm | 9.9 | |
| Sept. 21 |  Overcast | 31° /25° | 0 mm | 9 | |
| Sept. 22 | Sunny | 29° /22° | 0.6 mm | 7 | |
| Sept. 23 | Sunny | 30° /23° | 0 mm | 8 | |
| Sept. 24 | Sunny | 30° /23° | 0 mm | 8 | |
| Sept. 25 | Sunny | 32° /22° | 1.4 mm | 8 | |
| Sept. 26 | Overcast | 30° /22° | 2.5 mm | 7 | |
| Sept. 27 | Sunny | 30° /22° | 0 mm | 8 | |
| Sept. 28 | Sunny | 27° /20° | 0 mm | 7 | |
| Sept. 29 | Sunny | 25° /19° | 0 mm | 7 | |
| Sept. 30 | Sunny | 25° /18° | 0 mm | 6 | |
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Pima County in September - FAQ
What are the expected maximum and minimum temperatures in Pima County during September?
How much rainfall should be expected in Pima County during September?
What are the typical wind conditions in Pima County during September?
September rainfall patterns in Pima County
UV exposure in Pima County during September
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Where is Pima County?Get accurate weather forecasts for Pima County, located at latitude 32.222 and longitude -110.926. Stay updated with localized weather information tailored for Pima County.