December weather in Hill City, SD
The average temperature in Hill City in December is 25.4°F (10.2°F–40.7°F). Average precipitation: 0.49 inches. Average snowfall is 7.0 inches.
December is a winter month in Hill City, and is cooler than the annual average of 43.9°F. Daily temperatures swing about 30.5°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 8h 44m. For travel, December is cold.
Avg High
40.7°F
Avg Low
10.2°F
Precipitation
0.49 in
Snow
7.0 in
December records in Hill City
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 61.0°F (1994) | -15.0°F (2025) | 0.30 in (1968) |
| December 2 | 69.1°F (1988) | -9.9°F (2007) | 0.45 in (2018) |
| December 3 | 68.0°F (2021) | -8.0°F (1972) | 0.23 in (1955) |
| December 4 | 60.1°F (1988) | -29.0°F (1972) | 0.30 in (1977) |
| December 5 | 63.0°F (2020) | -32.1°F (1972) | 0.41 in (1960) |
| December 6 | 57.9°F (2003) | -22.0°F (1972) | 0.30 in (1982) |
| December 7 | 64.0°F (2023) | -29.9°F (1972) | 0.09 in (1972) |
| December 8 | 64.0°F (2020) | -20.0°F (1972) | 0.24 in (2007) |
| December 9 | 66.9°F (2020) | -24.0°F (1972) | 0.12 in (1966) |
| December 10 | 66.0°F (1990) | -22.0°F (1972) | 0.70 in (2021) |
| December 11 | 66.9°F (1993) | -16.1°F (1972) | 0.16 in (1965) |
| December 12 | 64.0°F (2014) | -20.9°F (2000) | 0.23 in (1992) |
| December 13 | 71.1°F (2014) | -16.1°F (2000) | 0.26 in (2009) |
| December 14 | 69.1°F (1997) | -18.0°F (1992) | 0.38 in (1975) |
| December 15 | 66.0°F (2025) | -27.9°F (1989) | 0.47 in (1981) |
| December 16 | 64.0°F (2025) | -16.1°F (2008) | 0.25 in (1993) |
| December 17 | 61.0°F (2025) | -23.1°F (2016) | 0.50 in (2016) |
| December 18 | 62.1°F (1988) | -32.1°F (2016) | 0.41 in (1973) |
| December 19 | 59.0°F (2011) | -20.0°F (1996) | 0.18 in (1983) |
| December 20 | 63.0°F (2003) | -24.0°F (1990) | 0.39 in (2013) |
| December 21 | 63.0°F (1994) | -29.0°F (1989) | 0.38 in (1996) |
| December 22 | 63.0°F (2024) | -38.9°F (1990) | 0.21 in (2011) |
| December 23 | 62.1°F (1994) | -29.0°F (1990) | 0.23 in (1984) |
| December 24 | 62.1°F (2025) | -20.0°F (2013) | 0.09 in (1982) |
| December 25 | 64.9°F (2025) | -20.0°F (1990) | 1.72 in (1964) |
| December 26 | 61.0°F (2025) | -23.1°F (1996) | 0.80 in (2016) |
| December 27 | 55.0°F (2025) | -13.0°F (2017) | 0.37 in (2023) |
| December 28 | 57.9°F (1999) | -14.1°F (1988) | 0.24 in (1955) |
| December 29 | 54.0°F (1999) | -29.0°F (1990) | 0.20 in (2014) |
| December 30 | 55.0°F (2011) | -33.0°F (1990) | 0.33 in (2017) |
| December 31 | 55.0°F (2011) | -23.1°F (1978) | 0.33 in (2018) |