September weather in St. Ignace, MI
The average temperature in St. Ignace in September is 58.7°F (49.5°F–67.8°F). Average precipitation: 3.68 inches.
September is a fall month in St. Ignace, and is warmer than the annual average of 42.5°F. Daily temperatures swing about 18.3°F between overnight low and afternoon high. Daylight averages about 12h 18m. For travel, September is a comfortable month to visit.
Avg High
67.8°F
Avg Low
49.5°F
Precipitation
3.68 in
Daylight
12h 18m
September records in St. Ignace
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 82.9°F (2010) | 48.0°F (2018) | 0.80 in (2010) |
| September 2 | 82.0°F (2015) | 48.0°F (2017) | 0.61 in (2020) |
| September 3 | 75.9°F (2015) | 48.0°F (2017) | 2.50 in (2010) |
| September 4 | 82.9°F (2012) | 46.9°F (2021) | 1.43 in (2018) |
| September 5 | 78.1°F (2018) | 44.1°F (2019) | 0.83 in (2014) |
| September 6 | 84.0°F (2016) | 45.0°F (2011) | 1.21 in (2014) |
| September 7 | 86.0°F (2015) | 43.0°F (2018) | 0.73 in (2012) |
| September 8 | 86.0°F (2015) | 43.0°F (2018) | 0.57 in (2010) |
| September 9 | 75.9°F (2016) | 44.1°F (2017) | 0.53 in (2015) |
| September 10 | 78.1°F (2014) | 44.1°F (2017) | 0.80 in (2019) |
| September 11 | 78.1°F (2013) | 41.0°F (2014) | 0.70 in (2014) |
| September 12 | 79.0°F (2011) | 42.1°F (2014) | 0.45 in (2013) |
| September 13 | 78.1°F (2016) | 39.9°F (2015) | 0.67 in (2020) |
| September 14 | 77.0°F (2017) | 39.9°F (2014) | 0.22 in (2016) |
| September 15 | 75.9°F (2017) | 39.9°F (2011) | 0.20 in (2014) |
| September 16 | 80.1°F (2015) | 37.0°F (2011) | 0.40 in (2010) |
| September 17 | 84.0°F (2017) | 39.9°F (2014) | 0.36 in (2010) |
| September 18 | 82.9°F (2018) | 34.0°F (2020) | 0.78 in (2012) |
| September 19 | 75.9°F (2019) | 34.0°F (2020) | 0.58 in (2015) |
| September 20 | 75.9°F (2016) | 37.9°F (2012) | 0.37 in (2011) |
| September 21 | 75.0°F (2017) | 41.0°F (2010) | 1.38 in (2014) |
| September 22 | 75.9°F (2017) | 39.0°F (2018) | 0.39 in (2019) |
| September 23 | 86.0°F (2017) | 37.9°F (2013) | 1.19 in (2019) |
| September 24 | 82.9°F (2017) | 39.9°F (2012) | 3.40 in (2010) |
| September 25 | 84.9°F (2017) | 46.0°F (2013) | 0.20 in (2018) |
| September 26 | 84.0°F (2017) | 43.0°F (2012) | 1.35 in (2016) |
| September 27 | 84.0°F (2017) | 39.0°F (2012) | 1.10 in (2011) |
| September 28 | 75.0°F (2014) | 39.9°F (2018) | 0.75 in (2019) |
| September 29 | 75.9°F (2015) | 37.0°F (2018) | 1.02 in (2020) |
| September 30 | 66.9°F (2016) | 39.0°F (2018) | 0.46 in (2020) |