September weather in Dexter, MI
The average temperature in Dexter in September is 62.5°F (51.0°F–74.1°F). Average precipitation: 2.74 inches.
September is a fall month in Dexter, and is warmer than the annual average of 48.3°F. Daily temperatures swing about 23.1°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 16m. For travel, September is one of the best months of the year to visit.
Avg High
74.1°F
Avg Low
51.0°F
Precipitation
2.74 in
Daylight
12h 16m
September records in Dexter
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 91.9°F (2012) | 42.1°F (2009) | 1.85 in (1980) |
| September 2 | 91.0°F (2011) | 44.1°F (2009) | 0.64 in (2018) |
| September 3 | 93.0°F (2011) | 43.0°F (2024) | 1.09 in (1981) |
| September 4 | 93.0°F (2011) | 45.0°F (2024) | 1.27 in (2015) |
| September 5 | 91.0°F (2018) | 42.1°F (2010) | 0.52 in (2017) |
| September 6 | 93.0°F (2014) | 42.1°F (2013) | 0.51 in (2004) |
| September 7 | 91.0°F (2002) | 37.9°F (2025) | 2.38 in (1990) |
| September 8 | 93.0°F (2002) | 37.9°F (2025) | 1.26 in (1992) |
| September 9 | 90.0°F (2002) | 39.0°F (2017) | 1.02 in (1985) |
| September 10 | 88.0°F (2002) | 37.9°F (2017) | 1.05 in (2000) |
| September 11 | 91.9°F (2013) | 42.1°F (2017) | 1.10 in (2014) |
| September 12 | 90.0°F (2013) | 41.0°F (2007) | 1.33 in (2019) |
| September 13 | 88.0°F (2005) | 39.9°F (2007) | 0.63 in (1978) |
| September 14 | 89.1°F (2005) | 36.0°F (2013) | 2.53 in (2008) |
| September 15 | 86.0°F (2021) | 34.0°F (2007) | 1.44 in (2008) |
| September 16 | 87.1°F (2018) | 36.0°F (2011) | 1.03 in (1997) |
| September 17 | 86.0°F (2018) | 33.1°F (2013) | 1.33 in (1987) |
| September 18 | 87.1°F (2018) | 41.0°F (2014) | 0.67 in (2001) |
| September 19 | 88.0°F (2018) | 30.9°F (2020) | 1.13 in (1997) |
| September 20 | 84.0°F (2016) | 35.1°F (2020) | 0.76 in (1988) |
| September 21 | 84.9°F (2007) | 37.9°F (2020) | 1.10 in (2014) |
| September 22 | 93.0°F (2017) | 39.0°F (2020) | 1.60 in (2021) |
| September 23 | 93.0°F (2017) | 36.0°F (2013) | 1.72 in (1988) |
| September 24 | 93.9°F (2017) | 34.0°F (2012) | 1.15 in (1985) |
| September 25 | 91.9°F (2017) | 37.0°F (2002) | 2.08 in (1986) |
| September 26 | 89.1°F (2017) | 36.0°F (2003) | 0.77 in (1984) |
| September 27 | 90.0°F (2017) | 39.0°F (2018) | 1.64 in (1996) |
| September 28 | 86.0°F (2025) | 33.1°F (2006) | 1.57 in (2019) |
| September 29 | 81.0°F (2025) | 34.0°F (2005) | 1.57 in (2016) |
| September 30 | 82.9°F (2002) | 34.0°F (2003) | 1.06 in (1994) |