September weather in Valley Springs, SD
The average temperature in Valley Springs in September is 61.2°F (49.2°F–73.2°F). Average precipitation: 3.08 inches.
September is a fall month in Valley Springs, and is warmer than the annual average of 45.1°F. Daily temperatures swing about 24°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
73.2°F
Avg Low
49.2°F
Precipitation
3.08 in
Daylight
12h 17m
September records in Valley Springs
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 91.0°F (2023) | 43.2°F (2009) | 0.65 in (2006) |
| September 2 | 96.6°F (2023) | 47.1°F (2008) | 0.53 in (2021) |
| September 3 | 93.7°F (2023) | 42.6°F (2008) | 0.85 in (2012) |
| September 4 | 96.4°F (2023) | 38.5°F (2025) | 0.36 in (2016) |
| September 5 | 90.3°F (2003) | 40.3°F (2025) | 1.19 in (2016) |
| September 6 | 90.1°F (2013) | 39.4°F (2025) | 0.38 in (2007) |
| September 7 | 88.2°F (2013) | 36.9°F (2025) | 1.37 in (2005) |
| September 8 | 91.2°F (2022) | 41.0°F (2020) | 1.75 in (2005) |
| September 9 | 92.1°F (2013) | 39.2°F (2020) | 0.85 in (2010) |
| September 10 | 89.1°F (2005) | 40.1°F (2020) | 3.16 in (2003) |
| September 11 | 94.8°F (2012) | 40.1°F (2022) | 2.11 in (2019) |
| September 12 | 86.7°F (2011) | 35.2°F (2014) | 1.98 in (2019) |
| September 13 | 90.1°F (2025) | 32.4°F (2014) | 0.69 in (2004) |
| September 14 | 89.2°F (2022) | 35.4°F (2011) | 0.46 in (2004) |
| September 15 | 91.4°F (2018) | 31.6°F (2007) | 1.96 in (2016) |
| September 16 | 92.1°F (2021) | 36.7°F (2014) | 0.46 in (2006) |
| September 17 | 88.2°F (2007) | 38.3°F (2017) | 0.60 in (2007) |
| September 18 | 88.2°F (2013) | 34.0°F (2012) | 0.83 in (2018) |
| September 19 | 88.0°F (2021) | 34.0°F (2003) | 3.18 in (2018) |
| September 20 | 94.3°F (2022) | 31.3°F (2006) | 2.63 in (2018) |
| September 21 | 89.4°F (2005) | 36.9°F (2013) | 1.24 in (2006) |
| September 22 | 90.9°F (2017) | 32.5°F (2012) | 1.30 in (2010) |
| September 23 | 87.4°F (2016) | 26.8°F (2012) | 1.06 in (2010) |
| September 24 | 83.5°F (2016) | 36.0°F (2012) | 1.55 in (2015) |
| September 25 | 85.1°F (2025) | 30.9°F (2003) | 1.00 in (2005) |
| September 26 | 88.9°F (2021) | 32.2°F (2012) | 0.20 in (2017) |
| September 27 | 88.0°F (2024) | 33.1°F (2012) | 0.08 in (2006) |
| September 28 | 89.4°F (2021) | 32.9°F (2022) | 0.61 in (2008) |
| September 29 | 91.4°F (2025) | 31.6°F (2005) | 0.48 in (2007) |
| September 30 | 90.9°F (2023) | 31.6°F (2003) | 0.43 in (2021) |