December weather in Egan, SD
The average temperature in Egan in December is 18.6°F (9.6°F–27.5°F). Average precipitation: 0.85 inches. Average snowfall is 8.5 inches.
December is a winter month in Egan, and is cooler than the annual average of 43.3°F. Daily temperatures swing about 17.9°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 8h 43m. For travel, December is cold.
Avg High
27.5°F
Avg Low
9.6°F
Precipitation
0.85 in
Snow
8.5 in
December records in Egan
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 63.0°F (1922) | -20.9°F (1893) | 0.73 in (2015) |
| December 2 | 64.9°F (1922) | -16.1°F (1895) | 0.80 in (1909) |
| December 3 | 63.0°F (1998) | -17.0°F (1940) | 0.68 in (1955) |
| December 4 | 62.1°F (1922) | -18.0°F (1978) | 0.34 in (2013) |
| December 5 | 62.1°F (1939) | -16.1°F (2005) | 0.50 in (1909) |
| December 6 | 64.9°F (1939) | -20.0°F (2013) | 0.23 in (1976) |
| December 7 | 55.9°F (1918) | -25.1°F (2013) | 0.20 in (1924) |
| December 8 | 59.0°F (2023) | -27.0°F (1927) | 0.40 in (1924) |
| December 9 | 61.0°F (1939) | -23.1°F (1927) | 0.55 in (2012) |
| December 10 | 57.0°F (1990) | -20.9°F (1917) | 0.20 in (1893) |
| December 11 | 57.0°F (1979) | -20.0°F (2013) | 0.48 in (2021) |
| December 12 | 54.0°F (1921) | -25.1°F (1932) | 0.60 in (1909) |
| December 13 | 57.9°F (1921) | -33.0°F (1917) | 0.65 in (2022) |
| December 14 | 55.0°F (1912) | -29.0°F (1901) | 0.40 in (1922) |
| December 15 | 57.9°F (1939) | -27.9°F (1901) | 0.72 in (1996) |
| December 16 | 62.1°F (1962) | -22.0°F (1951) | 0.69 in (1984) |
| December 17 | 57.0°F (1962) | -27.0°F (1922) | 0.60 in (1908) |
| December 18 | 52.0°F (1962) | -35.0°F (2016) | 0.57 in (1957) |
| December 19 | 54.0°F (2011) | -35.0°F (2016) | 0.24 in (1960) |
| December 20 | 57.0°F (1941) | -27.9°F (1983) | 0.78 in (1902) |
| December 21 | 55.0°F (1941) | -31.0°F (1916) | 0.43 in (2006) |
| December 22 | 50.0°F (1899) | -27.9°F (1989) | 0.44 in (1968) |
| December 23 | 55.9°F (1899) | -27.9°F (1983) | 0.46 in (1968) |
| December 24 | 51.1°F (2023) | -25.1°F (1983) | 0.37 in (1893) |
| December 25 | 51.1°F (2023) | -22.0°F (1924) | 0.90 in (1982) |
| December 26 | 48.9°F (1959) | -29.9°F (1933) | 1.31 in (2016) |
| December 27 | 51.1°F (1928) | -27.0°F (1933) | 0.43 in (2018) |
| December 28 | 50.0°F (1898) | -23.1°F (1924) | 0.49 in (1959) |
| December 29 | 51.1°F (2002) | -35.0°F (1917) | 0.55 in (1972) |
| December 30 | 52.0°F (1999) | -33.0°F (1973) | 0.90 in (1931) |
| December 31 | 55.9°F (2004) | -34.1°F (1973) | 0.76 in (2006) |