September weather in Oro Valley, AZ
The average temperature in Oro Valley in September is 78.7°F (61.8°F–95.5°F). Average precipitation: 1.17 inches.
September is a fall month in Oro Valley, and is warmer than the annual average of 65.7°F. Daily temperatures swing about 33.7°F between overnight low and afternoon high. Daylight averages about 12h 11m. For travel, September is hot.
Avg High
95.5°F
Avg Low
61.8°F
Precipitation
1.17 in
Daylight
12h 11m
September records in Oro Valley
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 107.1°F (2011) | 59.0°F (2025) | 1.10 in (2021) |
| September 2 | 107.1°F (2011) | 57.9°F (2010) | 0.37 in (2019) |
| September 3 | 102.9°F (2014) | 53.1°F (2025) | 0.15 in (2018) |
| September 4 | 102.9°F (2010) | 55.0°F (2025) | 0.14 in (2009) |
| September 5 | 108.0°F (2020) | 54.0°F (2025) | 0.81 in (2014) |
| September 6 | 108.0°F (2020) | 54.0°F (2025) | 0.40 in (2025) |
| September 7 | 106.0°F (2020) | 55.0°F (2025) | 0.54 in (2012) |
| September 8 | 104.0°F (2011) | 55.0°F (2025) | 0.79 in (2016) |
| September 9 | 104.0°F (2011) | 55.0°F (2025) | 2.88 in (2014) |
| September 10 | 106.0°F (2023) | 48.0°F (2020) | 0.21 in (2013) |
| September 11 | 109.0°F (2023) | 48.9°F (2010) | 0.38 in (2011) |
| September 12 | 102.9°F (2018) | 53.1°F (2020) | 0.54 in (2023) |
| September 13 | 104.0°F (2017) | 54.0°F (2010) | 0.18 in (2011) |
| September 14 | 102.9°F (2017) | 50.0°F (2025) | 0.25 in (2011) |
| September 15 | 105.1°F (2018) | 55.9°F (2016) | 0.00 in (2007) |
| September 16 | 105.1°F (2018) | 50.0°F (2016) | 0.17 in (2024) |
| September 17 | 102.0°F (2010) | 51.1°F (2016) | 0.23 in (2024) |
| September 18 | 102.9°F (2020) | 51.1°F (2022) | 0.13 in (2014) |
| September 19 | 104.0°F (2010) | 52.0°F (2023) | 0.03 in (2021) |
| September 20 | 100.9°F (2010) | 50.0°F (2025) | 0.93 in (2018) |
| September 21 | 100.9°F (2010) | 53.1°F (2021) | 0.26 in (2014) |
| September 22 | 99.0°F (2011) | 50.0°F (2024) | 0.87 in (2015) |
| September 23 | 102.9°F (2012) | 48.9°F (2013) | 0.27 in (2010) |
| September 24 | 102.0°F (2011) | 45.0°F (2017) | 0.10 in (2019) |
| September 25 | 102.0°F (2011) | 43.0°F (2017) | 0.26 in (2019) |
| September 26 | 105.1°F (2024) | 43.0°F (2017) | 0.44 in (2021) |
| September 27 | 105.1°F (2024) | 44.1°F (2017) | 0.36 in (2021) |
| September 28 | 107.1°F (2024) | 44.1°F (2013) | 0.10 in (2025) |
| September 29 | 107.1°F (2024) | 50.0°F (2013) | 0.02 in (2016) |
| September 30 | 105.1°F (2024) | 46.9°F (2014) | 0.80 in (2021) |