September weather in White Rock, SD
The average temperature in White Rock in September is 60.4°F (48.5°F–72.3°F). Average precipitation: 2.57 inches.
September is a fall month in White Rock, and is warmer than the annual average of 42.8°F. Daily temperatures swing about 23.8°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 18m. For travel, September is a comfortable month to visit.
Avg High
72.3°F
Avg Low
48.5°F
Precipitation
2.57 in
Daylight
12h 18m
September records in White Rock
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 90.0°F (1939) | 45.0°F (2010) | 0.57 in (2013) |
| September 2 | 91.0°F (2008) | 43.0°F (2020) | 1.46 in (2008) |
| September 3 | 91.9°F (1939) | 42.1°F (2008) | 2.45 in (2021) |
| September 4 | 91.9°F (2007) | 39.9°F (2011) | 0.56 in (2005) |
| September 5 | 91.0°F (2007) | 41.0°F (2011) | 0.36 in (2016) |
| September 6 | 91.9°F (2001) | 37.0°F (2025) | 2.65 in (2004) |
| September 7 | 93.0°F (2003) | 37.0°F (2020) | 1.42 in (2010) |
| September 8 | 91.9°F (2003) | 37.9°F (2020) | 0.28 in (1940) |
| September 9 | 91.9°F (2002) | 35.1°F (2020) | 2.17 in (2009) |
| September 10 | 84.9°F (2011) | 34.0°F (1940) | 1.43 in (2010) |
| September 11 | 91.0°F (2012) | 33.1°F (1940) | 0.43 in (1950) |
| September 12 | 87.1°F (2011) | 33.1°F (2007) | 1.00 in (2019) |
| September 13 | 90.0°F (1939) | 39.0°F (2007) | 0.42 in (2005) |
| September 14 | 98.1°F (1939) | 33.1°F (1940) | 0.99 in (2021) |
| September 15 | 87.1°F (2025) | 28.9°F (2011) | 1.00 in (2008) |
| September 16 | 91.0°F (2018) | 36.0°F (2014) | 0.73 in (2010) |
| September 17 | 91.0°F (2018) | 39.9°F (2010) | 1.30 in (2006) |
| September 18 | 89.1°F (1939) | 34.0°F (2012) | 0.76 in (2003) |
| September 19 | 93.0°F (1940) | 37.0°F (2003) | 0.27 in (2025) |
| September 20 | 91.9°F (1940) | 34.0°F (2006) | 1.25 in (1948) |
| September 21 | 89.1°F (2022) | 33.1°F (2000) | 0.85 in (2007) |
| September 22 | 90.0°F (2015) | 34.0°F (2012) | 0.65 in (2006) |
| September 23 | 89.1°F (2017) | 27.0°F (2012) | 0.97 in (2010) |
| September 24 | 89.1°F (2007) | 30.9°F (2001) | 1.40 in (2017) |
| September 25 | 80.1°F (2012) | 23.0°F (1939) | 0.37 in (2017) |
| September 26 | 82.9°F (2008) | 28.9°F (2012) | 0.51 in (2017) |
| September 27 | 84.9°F (2021) | 30.0°F (2002) | 0.26 in (2006) |
| September 28 | 84.9°F (2011) | 24.1°F (1939) | 0.60 in (2013) |
| September 29 | 89.1°F (2021) | 23.0°F (1939) | 1.00 in (2013) |
| September 30 | 91.9°F (2025) | 26.1°F (2003) | 0.42 in (1950) |