December weather in Plankinton, SD
The average temperature in Plankinton in December is 21.7°F (12.6°F–30.7°F). Average precipitation: 0.62 inches. Average snowfall is 7.1 inches.
December is a winter month in Plankinton, and is cooler than the annual average of 46.1°F. Daily temperatures swing about 18.1°F between overnight low and afternoon high. Expect about 3 days with precipitation. Daylight averages about 8h 45m. For travel, December is cold.
Avg High
30.7°F
Avg Low
12.6°F
Precipitation
0.62 in
Snow
7.1 in
December records in Plankinton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 72.0°F (1998) | -8.0°F (1960) | 0.65 in (2015) |
| December 2 | 71.1°F (1998) | -15.0°F (1985) | 1.15 in (1909) |
| December 3 | 69.1°F (1941) | -6.0°F (1950) | 0.62 in (1955) |
| December 4 | 66.0°F (1941) | -13.0°F (1978) | 0.53 in (1985) |
| December 5 | 64.0°F (1939) | -9.9°F (1950) | 0.30 in (1960) |
| December 6 | 70.0°F (1939) | -20.9°F (1950) | 0.84 in (1951) |
| December 7 | 63.0°F (2023) | -20.0°F (1972) | 0.12 in (2025) |
| December 8 | 69.1°F (2023) | -24.0°F (1927) | 0.55 in (2007) |
| December 9 | 63.0°F (1939) | -18.0°F (1958) | 0.42 in (1918) |
| December 10 | 66.0°F (1990) | -15.0°F (1972) | 0.76 in (1970) |
| December 11 | 66.0°F (1939) | -13.0°F (1962) | 0.97 in (1949) |
| December 12 | 57.9°F (1920) | -25.1°F (1932) | 0.18 in (1956) |
| December 13 | 63.0°F (1921) | -18.9°F (1985) | 0.60 in (1922) |
| December 14 | 66.0°F (1998) | -18.0°F (2025) | 0.78 in (2022) |
| December 15 | 62.1°F (1939) | -23.1°F (1951) | 0.38 in (1915) |
| December 16 | 61.0°F (1962) | -18.0°F (1989) | 0.35 in (2014) |
| December 17 | 57.9°F (1939) | -24.0°F (1922) | 0.50 in (2016) |
| December 18 | 66.9°F (1923) | -25.1°F (2016) | 0.20 in (2012) |
| December 19 | 55.0°F (1979) | -20.0°F (1955) | 0.07 in (1960) |
| December 20 | 64.9°F (1941) | -15.0°F (1924) | 0.40 in (1983) |
| December 21 | 60.1°F (1933) | -31.0°F (1983) | 0.60 in (2006) |
| December 22 | 63.0°F (1972) | -31.0°F (1989) | 0.52 in (1918) |
| December 23 | 60.1°F (2020) | -32.1°F (1983) | 0.80 in (1987) |
| December 24 | 55.0°F (2023) | -24.0°F (1983) | 0.62 in (1917) |
| December 25 | 55.9°F (1943) | -16.1°F (1985) | 0.48 in (1964) |
| December 26 | 52.0°F (1956) | -20.0°F (1933) | 1.70 in (2023) |
| December 27 | 63.0°F (1928) | -17.0°F (1925) | 0.55 in (2018) |
| December 28 | 60.1°F (1999) | -18.0°F (1924) | 0.45 in (2018) |
| December 29 | 59.0°F (1999) | -20.0°F (1990) | 0.50 in (1972) |
| December 30 | 57.0°F (1933) | -27.0°F (1990) | 0.60 in (1923) |
| December 31 | 55.9°F (1999) | -23.1°F (2017) | 0.66 in (2024) |