October weather in Rapid City, SD
The average temperature in Rapid City in October is 48.3°F (37.9°F–58.8°F). Average precipitation: 1.49 inches. Average snowfall is 3.4 inches.
October is a fall month in Rapid City, and is warmer than the annual average of 48°F. Daily temperatures swing about 20.9°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 10h 45m. For travel, October is cool.
Avg High
58.8°F
Avg Low
37.9°F
Precipitation
1.49 in
Snow
3.4 in
October records in Rapid City
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 90.0°F (2005) | 28.9°F (1999) | 0.31 in (2002) |
| October 2 | 93.9°F (2011) | 28.9°F (1999) | 0.79 in (2023) |
| October 3 | 93.0°F (2025) | 30.0°F (1999) | 0.96 in (2013) |
| October 4 | 88.0°F (2011) | 28.0°F (2013) | 1.96 in (1998) |
| October 5 | 89.1°F (2021) | 25.0°F (2000) | 0.92 in (2009) |
| October 6 | 84.9°F (2020) | 23.0°F (2000) | 0.48 in (2011) |
| October 7 | 87.1°F (2003) | 23.0°F (2000) | 0.13 in (2007) |
| October 8 | 82.9°F (2020) | 21.0°F (2000) | 0.35 in (1997) |
| October 9 | 90.0°F (2003) | 16.0°F (2009) | 0.52 in (2001) |
| October 10 | 87.1°F (2015) | 12.9°F (2009) | 0.24 in (2008) |
| October 11 | 86.0°F (2015) | 17.1°F (2009) | 0.78 in (2013) |
| October 12 | 80.1°F (1996) | 19.9°F (2006) | 2.63 in (2023) |
| October 13 | 75.0°F (1999) | 25.0°F (2018) | 0.29 in (2021) |
| October 14 | 84.0°F (2016) | 21.0°F (2018) | 1.10 in (2013) |
| October 15 | 82.0°F (2014) | 21.0°F (2018) | 0.53 in (2025) |
| October 16 | 87.1°F (2024) | 26.1°F (2001) | 1.16 in (1998) |
| October 17 | 84.9°F (2003) | 26.1°F (2006) | 0.85 in (1998) |
| October 18 | 84.9°F (2000) | 19.9°F (1996) | 0.17 in (2001) |
| October 19 | 84.0°F (2017) | 27.0°F (2020) | 0.85 in (1996) |
| October 20 | 82.0°F (2017) | 25.0°F (2006) | 0.71 in (2019) |
| October 21 | 82.0°F (2014) | 25.0°F (2006) | 0.28 in (2020) |
| October 22 | 78.1°F (2003) | 18.0°F (2002) | 0.37 in (2015) |
| October 23 | 75.0°F (1998) | 15.1°F (2020) | 0.08 in (2002) |
| October 24 | 78.1°F (2007) | 14.0°F (2020) | 0.28 in (2012) |
| October 25 | 79.0°F (2025) | 9.0°F (1997) | 0.10 in (1996) |
| October 26 | 77.0°F (2024) | 3.9°F (2020) | 1.48 in (1996) |
| October 27 | 82.0°F (2016) | 9.0°F (2023) | 0.13 in (2025) |
| October 28 | 77.0°F (2004) | 12.0°F (2019) | 0.73 in (1998) |
| October 29 | 77.0°F (2008) | 8.1°F (2019) | 1.67 in (1996) |
| October 30 | 71.1°F (2020) | 8.1°F (2019) | 0.08 in (2003) |
| October 31 | 79.0°F (1999) | 7.0°F (2006) | 0.43 in (2000) |