September weather in Detroit, MI
The average temperature in Detroit in September is 64.8°F (54.5°F–75.2°F). Average precipitation: 3.04 inches.
September is a fall month in Detroit, and is warmer than the annual average of 50.3°F. Daily temperatures swing about 20.7°F between overnight low and afternoon high. Daylight averages about 12h 16m. For travel, September is one of the best months of the year to visit.
Avg High
75.2°F
Avg Low
54.5°F
Precipitation
3.04 in
Daylight
12h 16m
September records in Detroit
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 96.1°F (2012) | 46.9°F (2009) | 0.00 in (2005) |
| September 2 | 93.9°F (2010) | 48.0°F (2009) | 1.00 in (2014) |
| September 3 | 98.1°F (2011) | 48.0°F (2009) | 0.22 in (2014) |
| September 4 | 97.0°F (2011) | 53.1°F (2009) | 1.45 in (2015) |
| September 5 | 90.0°F (2018) | 48.0°F (2010) | 0.44 in (2012) |
| September 6 | 93.0°F (2014) | 48.0°F (2010) | 0.90 in (2006) |
| September 7 | 91.0°F (2016) | 46.9°F (2025) | 0.20 in (2006) |
| September 8 | 91.9°F (2015) | 44.1°F (2024) | 1.05 in (2011) |
| September 9 | 90.0°F (2015) | 45.0°F (2025) | 0.54 in (2008) |
| September 10 | 84.0°F (2022) | 45.0°F (2017) | 1.29 in (2011) |
| September 11 | 96.1°F (2013) | 46.0°F (2008) | 1.48 in (2014) |
| September 12 | 93.9°F (2013) | 48.9°F (2007) | 1.14 in (2019) |
| September 13 | 87.1°F (2012) | 45.0°F (2007) | 0.85 in (2006) |
| September 14 | 87.1°F (2019) | 42.1°F (2013) | 2.21 in (2008) |
| September 15 | 89.1°F (2021) | 42.1°F (2013) | 1.14 in (2008) |
| September 16 | 84.9°F (2018) | 39.0°F (2007) | 0.20 in (2005) |
| September 17 | 88.0°F (2018) | 41.0°F (2007) | 0.52 in (2010) |
| September 18 | 86.0°F (2017) | 42.1°F (2013) | 0.18 in (2016) |
| September 19 | 89.1°F (2018) | 42.1°F (2012) | 0.42 in (2006) |
| September 20 | 87.1°F (2007) | 39.9°F (2012) | 1.12 in (2013) |
| September 21 | 86.0°F (2019) | 48.9°F (2012) | 2.26 in (2018) |
| September 22 | 90.0°F (2017) | 48.0°F (2014) | 2.48 in (2021) |
| September 23 | 90.0°F (2017) | 45.0°F (2012) | 1.38 in (2005) |
| September 24 | 91.0°F (2017) | 39.9°F (2012) | 0.59 in (2011) |
| September 25 | 90.0°F (2017) | 39.0°F (2012) | 0.50 in (2018) |
| September 26 | 93.0°F (2017) | 46.0°F (2010) | 2.44 in (2018) |
| September 27 | 93.0°F (2017) | 46.0°F (2010) | 0.80 in (2011) |
| September 28 | 84.0°F (2025) | 46.0°F (2012) | 0.78 in (2023) |
| September 29 | 81.0°F (2013) | 37.9°F (2020) | 4.34 in (2016) |
| September 30 | 81.0°F (2025) | 42.1°F (2022) | 1.15 in (2016) |