September weather in Temecula, CA
The average temperature in Temecula in September is 74.8°F (61.7°F–87.8°F). Average precipitation: 0.11 inches.
September is a fall month in Temecula, and is warmer than the annual average of 65.1°F. Daily temperatures swing about 26.1°F between overnight low and afternoon high. Expect about 2 days with precipitation. Daylight averages about 12h 12m. For travel, September is a comfortable month to visit.
Avg High
87.8°F
Avg Low
61.7°F
Precipitation
0.11 in
Daylight
12h 12m
September records in Temecula
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 108.1°F (2017) | 54.5°F (2011) | 0.11 in (2023) |
| September 2 | 105.6°F (2017) | 54.3°F (2011) | 0.03 in (2023) |
| September 3 | 102.2°F (2009) | 55.6°F (2011) | 0.00 in (2008) |
| September 4 | 106.3°F (2022) | 57.7°F (2011) | 0.04 in (2011) |
| September 5 | 116.1°F (2020) | 57.6°F (2016) | 0.02 in (2011) |
| September 6 | 112.8°F (2024) | 54.9°F (2016) | 0.00 in (2008) |
| September 7 | 104.9°F (2024) | 56.7°F (2009) | 0.00 in (2008) |
| September 8 | 110.7°F (2024) | 56.5°F (2010) | 0.47 in (2024) |
| September 9 | 107.4°F (2024) | 55.6°F (2010) | 0.54 in (2022) |
| September 10 | 102.6°F (2015) | 52.5°F (2010) | 0.01 in (2018) |
| September 11 | 102.4°F (2017) | 54.7°F (2010) | 0.29 in (2022) |
| September 12 | 96.1°F (2015) | 51.6°F (2010) | 0.00 in (2008) |
| September 13 | 101.1°F (2014) | 56.7°F (2016) | 0.00 in (2008) |
| September 14 | 106.5°F (2012) | 54.0°F (2016) | 0.01 in (2008) |
| September 15 | 106.5°F (2012) | 54.5°F (2021) | 1.00 in (2015) |
| September 16 | 106.5°F (2014) | 54.7°F (2010) | 0.05 in (2014) |
| September 17 | 103.8°F (2020) | 49.8°F (2010) | 0.03 in (2023) |
| September 18 | 103.3°F (2020) | 48.4°F (2010) | 0.31 in (2025) |
| September 19 | 101.7°F (2016) | 51.8°F (2018) | 0.00 in (2008) |
| September 20 | 105.3°F (2015) | 54.5°F (2010) | 0.21 in (2016) |
| September 21 | 104.7°F (2021) | 53.2°F (2010) | 0.02 in (2025) |
| September 22 | 104.0°F (2021) | 50.5°F (2011) | 0.02 in (2016) |
| September 23 | 104.4°F (2009) | 52.0°F (2010) | 0.00 in (2008) |
| September 24 | 102.2°F (2009) | 54.0°F (2023) | 0.08 in (2021) |
| September 25 | 105.1°F (2010) | 54.3°F (2023) | 0.02 in (2011) |
| September 26 | 109.4°F (2010) | 54.1°F (2024) | 0.02 in (2019) |
| September 27 | 112.8°F (2010) | 52.5°F (2013) | 0.01 in (2021) |
| September 28 | 97.3°F (2017) | 52.0°F (2023) | 0.05 in (2009) |
| September 29 | 104.9°F (2020) | 52.9°F (2024) | 0.01 in (2009) |
| September 30 | 109.2°F (2020) | 51.4°F (2019) | 0.09 in (2023) |