September weather in Mitchell, SD
The average temperature in Mitchell in September is 64.6°F (53.0°F–76.1°F). Average precipitation: 2.64 inches.
September is a fall month in Mitchell, and is warmer than the annual average of 47.9°F. Daily temperatures swing about 23.1°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 17m. For travel, September is one of the best months of the year to visit.
Avg High
76.1°F
Avg Low
53.0°F
Precipitation
2.64 in
Daylight
12h 17m
September records in Mitchell
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 96.1°F (2012) | 51.1°F (2006) | 2.33 in (2006) |
| September 2 | 104.0°F (2023) | 48.9°F (2019) | 0.80 in (2008) |
| September 3 | 99.0°F (2023) | 43.0°F (2008) | 0.39 in (2009) |
| September 4 | 100.0°F (2023) | 46.0°F (2006) | 0.75 in (2012) |
| September 5 | 91.9°F (2005) | 45.0°F (2025) | 0.48 in (2004) |
| September 6 | 95.0°F (2013) | 43.0°F (2017) | 0.38 in (2007) |
| September 7 | 91.9°F (2013) | 39.9°F (2025) | 0.10 in (2019) |
| September 8 | 99.0°F (2022) | 46.0°F (2020) | 0.37 in (2009) |
| September 9 | 98.1°F (2005) | 41.0°F (2020) | 0.29 in (2014) |
| September 10 | 96.1°F (2005) | 39.0°F (2020) | 1.97 in (2019) |
| September 11 | 95.0°F (2012) | 39.0°F (2020) | 4.34 in (2019) |
| September 12 | 91.9°F (2004) | 43.0°F (2007) | 0.32 in (2005) |
| September 13 | 93.9°F (2017) | 37.0°F (2014) | 0.21 in (2021) |
| September 14 | 93.0°F (2022) | 36.0°F (2007) | 0.09 in (2023) |
| September 15 | 89.1°F (2012) | 35.1°F (2011) | 0.94 in (2004) |
| September 16 | 90.0°F (2008) | 41.0°F (2014) | 0.29 in (2024) |
| September 17 | 89.1°F (2007) | 39.9°F (2017) | 0.59 in (2021) |
| September 18 | 93.0°F (2013) | 37.0°F (2012) | 0.46 in (2018) |
| September 19 | 91.0°F (2004) | 37.9°F (2015) | 2.12 in (2018) |
| September 20 | 93.0°F (2007) | 33.1°F (2006) | 0.66 in (2004) |
| September 21 | 93.9°F (2005) | 42.1°F (2013) | 1.10 in (2006) |
| September 22 | 86.0°F (2013) | 33.1°F (2012) | 1.21 in (2004) |
| September 23 | 91.0°F (2007) | 34.0°F (2012) | 1.01 in (2023) |
| September 24 | 82.9°F (2012) | 39.9°F (2006) | 1.69 in (2005) |
| September 25 | 87.1°F (2008) | 41.0°F (2011) | 1.16 in (2005) |
| September 26 | 91.0°F (2008) | 41.0°F (2011) | 0.00 in (2004) |
| September 27 | 84.9°F (2014) | 41.0°F (2006) | 0.56 in (2013) |
| September 28 | 93.0°F (2011) | 34.0°F (2006) | 0.86 in (2013) |
| September 29 | 93.0°F (2025) | 36.0°F (2009) | 0.32 in (2023) |
| September 30 | 89.1°F (2023) | 39.9°F (2008) | 0.76 in (2007) |