September weather in Chatham, MI
The average temperature in Chatham in September is 57.5°F (46.2°F–68.8°F). Average precipitation: 4.25 inches.
September is a fall month in Chatham, and is warmer than the annual average of 41.4°F. Daily temperatures swing about 22.6°F between overnight low and afternoon high. Expect about 15 days with precipitation. Daylight averages about 12h 19m. For travel, September is a comfortable month to visit.
Avg High
68.8°F
Avg Low
46.2°F
Precipitation
4.25 in
Daylight
12h 19m
September records in Chatham
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 87.1°F (2000) | 30.9°F (2003) | 1.00 in (2010) |
| September 2 | 89.1°F (2008) | 36.0°F (1994) | 0.93 in (2013) |
| September 3 | 90.0°F (2008) | 33.1°F (1987) | 1.15 in (2008) |
| September 4 | 88.0°F (1999) | 30.0°F (1997) | 1.87 in (2007) |
| September 5 | 91.0°F (2023) | 28.9°F (2003) | 2.59 in (2018) |
| September 6 | 90.0°F (2007) | 25.0°F (2011) | 0.50 in (2016) |
| September 7 | 84.9°F (2007) | 30.9°F (2011) | 1.43 in (1995) |
| September 8 | 90.0°F (2002) | 21.9°F (1995) | 0.78 in (2012) |
| September 9 | 90.0°F (2002) | 33.1°F (1995) | 0.80 in (2015) |
| September 10 | 93.0°F (2002) | 28.9°F (1995) | 1.84 in (2025) |
| September 11 | 91.9°F (1998) | 33.1°F (1992) | 2.12 in (2014) |
| September 12 | 91.9°F (2005) | 36.0°F (2014) | 1.92 in (2000) |
| September 13 | 89.1°F (2005) | 32.0°F (2015) | 1.10 in (2019) |
| September 14 | 84.9°F (2024) | 34.0°F (2001) | 2.06 in (2003) |
| September 15 | 84.0°F (1991) | 32.0°F (2007) | 0.72 in (2003) |
| September 16 | 84.9°F (2018) | 23.0°F (2011) | 1.38 in (2010) |
| September 17 | 88.0°F (2024) | 26.1°F (2011) | 1.51 in (2016) |
| September 18 | 84.9°F (2024) | 26.1°F (2011) | 1.02 in (2017) |
| September 19 | 82.9°F (2000) | 26.1°F (1993) | 0.79 in (1997) |
| September 20 | 82.0°F (2024) | 26.1°F (1993) | 1.25 in (2001) |
| September 21 | 80.1°F (1989) | 32.0°F (2006) | 1.00 in (2009) |
| September 22 | 81.0°F (2019) | 25.0°F (2007) | 1.20 in (1995) |
| September 23 | 82.9°F (2017) | 28.0°F (1995) | 1.30 in (2003) |
| September 24 | 88.0°F (2017) | 30.0°F (1989) | 1.44 in (2010) |
| September 25 | 88.0°F (2017) | 28.0°F (2000) | 1.04 in (2021) |
| September 26 | 82.9°F (2017) | 30.0°F (2010) | 1.53 in (2022) |
| September 27 | 81.0°F (2024) | 28.9°F (1989) | 1.15 in (2020) |
| September 28 | 81.0°F (2024) | 21.9°F (2000) | 0.64 in (1994) |
| September 29 | 82.0°F (2014) | 23.0°F (2004) | 1.70 in (2005) |
| September 30 | 82.0°F (2025) | 24.1°F (1993) | 2.77 in (2011) |