September weather in Salem, SD
The average temperature in Salem in September is 61.0°F (48.0°F–74.0°F). Average precipitation: 3.03 inches.
September is a fall month in Salem, and is warmer than the annual average of 44.4°F. Daily temperatures swing about 26°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
74.0°F
Avg Low
48.0°F
Precipitation
3.03 in
Daylight
12h 17m
September records in Salem
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 93.0°F (2012) | 48.0°F (2009) | 0.41 in (2015) |
| September 2 | 95.0°F (2012) | 45.0°F (2013) | 0.26 in (2021) |
| September 3 | 100.0°F (2023) | 37.0°F (2008) | 1.52 in (2009) |
| September 4 | 96.1°F (2023) | 39.9°F (2025) | 0.08 in (2012) |
| September 5 | 98.1°F (2023) | 41.0°F (2011) | 1.44 in (2016) |
| September 6 | 91.9°F (2013) | 33.1°F (2025) | 0.23 in (2010) |
| September 7 | 91.0°F (2021) | 34.0°F (2025) | 0.10 in (2008) |
| September 8 | 89.1°F (2022) | 37.9°F (2025) | 0.56 in (2019) |
| September 9 | 95.0°F (2022) | 37.0°F (2020) | 0.50 in (2014) |
| September 10 | 90.0°F (2012) | 37.0°F (2020) | 3.80 in (2019) |
| September 11 | 97.0°F (2012) | 37.9°F (2020) | 1.10 in (2019) |
| September 12 | 88.0°F (2011) | 37.0°F (2015) | 1.00 in (2019) |
| September 13 | 87.1°F (2017) | 34.0°F (2014) | 0.24 in (2021) |
| September 14 | 88.0°F (2020) | 34.0°F (2014) | 0.08 in (2014) |
| September 15 | 90.0°F (2022) | 30.9°F (2011) | 0.91 in (2010) |
| September 16 | 91.9°F (2018) | 36.0°F (2014) | 0.53 in (2022) |
| September 17 | 93.9°F (2021) | 36.0°F (2017) | 0.44 in (2021) |
| September 18 | 90.0°F (2013) | 30.9°F (2012) | 0.40 in (2018) |
| September 19 | 86.0°F (2014) | 39.9°F (2015) | 0.45 in (2018) |
| September 20 | 89.1°F (2016) | 41.0°F (2012) | 3.35 in (2018) |
| September 21 | 93.0°F (2022) | 36.0°F (2013) | 0.46 in (2010) |
| September 22 | 93.9°F (2017) | 27.0°F (2012) | 1.00 in (2010) |
| September 23 | 87.1°F (2016) | 28.0°F (2012) | 1.75 in (2010) |
| September 24 | 82.9°F (2020) | 37.0°F (2011) | 2.41 in (2015) |
| September 25 | 84.0°F (2008) | 33.1°F (2021) | 0.49 in (2018) |
| September 26 | 88.0°F (2008) | 35.1°F (2018) | 0.21 in (2017) |
| September 27 | 89.1°F (2021) | 34.0°F (2012) | 0.26 in (2013) |
| September 28 | 90.0°F (2011) | 34.0°F (2022) | 0.44 in (2013) |
| September 29 | 90.0°F (2021) | 32.0°F (2009) | 0.62 in (2008) |
| September 30 | 91.9°F (2025) | 34.0°F (2011) | 0.18 in (2017) |