September weather in Frankenmuth, MI
The average temperature in Frankenmuth in September is 61.4°F (49.9°F–72.8°F). Average precipitation: inches.
September is a fall month in Frankenmuth, and is warmer than the annual average of 46.9°F. Daily temperatures swing about 22.9°F between overnight low and afternoon high. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
72.8°F
Avg Low
49.9°F
Precipitation
in
Daylight
12h 17m
September records in Frankenmuth
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 91.0°F (2010) | 39.9°F (2017) | 0.00 in (2007) |
| September 2 | 88.0°F (2010) | 37.9°F (2017) | 0.82 in (2010) |
| September 3 | 90.0°F (2011) | 44.1°F (2024) | 0.52 in (2019) |
| September 4 | 84.9°F (2018) | 46.0°F (2024) | 1.82 in (2018) |
| September 5 | 87.1°F (2018) | 46.0°F (2025) | 0.85 in (2012) |
| September 6 | 89.1°F (2023) | 41.0°F (2013) | 0.35 in (2018) |
| September 7 | 89.1°F (2016) | 39.9°F (2025) | 0.49 in (2020) |
| September 8 | 87.1°F (2015) | 37.9°F (2025) | 0.81 in (2021) |
| September 9 | 84.0°F (2015) | 39.9°F (2025) | 0.50 in (2020) |
| September 10 | 80.1°F (2009) | 41.0°F (2008) | 0.04 in (2020) |
| September 11 | 93.0°F (2013) | 39.9°F (2008) | 0.93 in (2007) |
| September 12 | 82.0°F (2019) | 42.1°F (2017) | 2.01 in (2022) |
| September 13 | 81.0°F (2011) | 43.0°F (2007) | 1.15 in (2021) |
| September 14 | 84.0°F (2012) | 41.0°F (2014) | 2.40 in (2008) |
| September 15 | 86.0°F (2021) | 39.0°F (2007) | 2.27 in (2008) |
| September 16 | 84.0°F (2015) | 34.0°F (2011) | 0.16 in (2014) |
| September 17 | 87.1°F (2024) | 35.1°F (2011) | 0.27 in (2016) |
| September 18 | 84.0°F (2021) | 39.0°F (2009) | 0.40 in (2015) |
| September 19 | 87.1°F (2025) | 30.0°F (2020) | 0.17 in (2010) |
| September 20 | 84.9°F (2007) | 35.1°F (2014) | 0.56 in (2011) |
| September 21 | 84.0°F (2024) | 37.9°F (2009) | 0.52 in (2014) |
| September 22 | 86.0°F (2007) | 44.1°F (2014) | 0.90 in (2021) |
| September 23 | 91.9°F (2017) | 42.1°F (2007) | 1.03 in (2021) |
| September 24 | 84.0°F (2010) | 35.1°F (2013) | 0.14 in (2025) |
| September 25 | 89.1°F (2007) | 42.1°F (2020) | 0.12 in (2024) |
| September 26 | 81.0°F (2007) | 44.1°F (2010) | 0.25 in (2007) |
| September 27 | 75.9°F (2014) | 39.0°F (2012) | 0.81 in (2021) |
| September 28 | 81.0°F (2020) | 39.9°F (2012) | 0.64 in (2023) |
| September 29 | 79.0°F (2021) | 39.9°F (2007) | 0.42 in (2020) |
| September 30 | 78.1°F (2024) | 35.1°F (2022) | 0.59 in (2008) |