September weather in Holly, MI
The average temperature in Holly in September is 61.1°F (49.9°F–72.4°F). Average precipitation: 3.08 inches.
September is a fall month in Holly, and is warmer than the annual average of 46.8°F. Daily temperatures swing about 22.5°F between overnight low and afternoon high. Daylight averages about 12h 16m. For travel, September is a comfortable month to visit.
Avg High
72.4°F
Avg Low
49.9°F
Precipitation
3.08 in
Daylight
12h 16m
September records in Holly
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 90.0°F (2010) | 43.0°F (2017) | 0.10 in (2019) |
| September 2 | 91.0°F (2010) | 43.0°F (2017) | 1.15 in (2010) |
| September 3 | 91.0°F (2011) | 43.0°F (2009) | 0.44 in (2018) |
| September 4 | 88.0°F (2011) | 46.9°F (2024) | 0.50 in (2025) |
| September 5 | 86.0°F (2023) | 45.0°F (2003) | 0.25 in (2008) |
| September 6 | 90.0°F (2014) | 42.1°F (2017) | 1.04 in (2014) |
| September 7 | 88.0°F (2015) | 39.9°F (2025) | 0.37 in (2020) |
| September 8 | 93.0°F (2002) | 33.1°F (2008) | 0.86 in (2012) |
| September 9 | 91.0°F (2002) | 37.9°F (2017) | 1.32 in (2008) |
| September 10 | 90.0°F (2002) | 37.0°F (2017) | 0.28 in (2011) |
| September 11 | 91.0°F (2013) | 39.0°F (2017) | 0.70 in (2007) |
| September 12 | 87.1°F (2005) | 44.1°F (2017) | 1.42 in (2019) |
| September 13 | 89.1°F (2005) | 43.0°F (2007) | 0.63 in (2014) |
| September 14 | 87.1°F (2005) | 37.0°F (2013) | 3.10 in (2008) |
| September 15 | 86.0°F (2002) | 37.0°F (2013) | 2.60 in (2008) |
| September 16 | 84.0°F (2024) | 37.0°F (2007) | 0.60 in (2010) |
| September 17 | 84.0°F (2018) | 35.1°F (2013) | 0.65 in (2010) |
| September 18 | 86.0°F (2018) | 37.0°F (2013) | 1.55 in (2016) |
| September 19 | 86.0°F (2025) | 33.1°F (2020) | 0.70 in (2002) |
| September 20 | 84.9°F (2002) | 33.1°F (2020) | 0.70 in (2018) |
| September 21 | 82.9°F (2007) | 37.0°F (2020) | 1.17 in (2018) |
| September 22 | 91.0°F (2017) | 41.0°F (2002) | 1.46 in (2021) |
| September 23 | 91.9°F (2017) | 39.0°F (2002) | 2.00 in (2021) |
| September 24 | 93.0°F (2017) | 37.0°F (2022) | 0.52 in (2021) |
| September 25 | 91.0°F (2017) | 41.0°F (2006) | 0.81 in (2003) |
| September 26 | 90.0°F (2017) | 37.9°F (2003) | 0.70 in (2005) |
| September 27 | 90.0°F (2017) | 37.9°F (2003) | 0.31 in (2003) |
| September 28 | 84.0°F (2025) | 39.9°F (2020) | 0.85 in (2019) |
| September 29 | 78.1°F (2025) | 34.0°F (2006) | 0.80 in (2009) |
| September 30 | 82.0°F (2025) | 33.1°F (2006) | 0.93 in (2016) |