January weather in Spearfish, SD
The average temperature in Spearfish in January is 25.8°F (15.7°F–35.9°F). Average precipitation: 0.60 inches. Average snowfall is 8.2 inches.
January is a winter month in Spearfish, and is cooler than the annual average of 46.5°F. Daily temperatures swing about 20.2°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 9h 0m. For travel, January is cold.
Avg High
35.9°F
Avg Low
15.7°F
Precipitation
0.60 in
Snow
8.2 in
January records in Spearfish
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 63.0°F (1997) | -24.0°F (1924) | 0.27 in (1970) |
| January 2 | 66.0°F (1927) | -24.0°F (1968) | 0.47 in (1922) |
| January 3 | 60.1°F (1893) | -27.9°F (1950) | 1.25 in (1925) |
| January 4 | 59.0°F (1956) | -32.1°F (1950) | 0.40 in (1929) |
| January 5 | 68.0°F (1921) | -18.9°F (1909) | 0.30 in (2003) |
| January 6 | 64.9°F (1914) | -24.0°F (1912) | 0.75 in (2010) |
| January 7 | 66.0°F (2003) | -22.0°F (1912) | 0.20 in (1986) |
| January 8 | 63.0°F (1958) | -18.9°F (1976) | 0.17 in (2004) |
| January 9 | 66.9°F (2012) | -22.0°F (1930) | 0.31 in (1975) |
| January 10 | 63.0°F (1928) | -24.0°F (1982) | 0.28 in (1924) |
| January 11 | 68.0°F (1953) | -22.0°F (1912) | 0.30 in (1895) |
| January 12 | 66.9°F (1987) | -31.0°F (1916) | 0.30 in (1897) |
| January 13 | 62.1°F (1983) | -27.9°F (1916) | 0.31 in (1994) |
| January 14 | 60.1°F (1933) | -26.0°F (2024) | 0.19 in (1994) |
| January 15 | 72.0°F (1986) | -23.1°F (1907) | 0.36 in (1943) |
| January 16 | 68.0°F (1973) | -27.9°F (2024) | 1.50 in (1897) |
| January 17 | 66.0°F (1974) | -29.9°F (1943) | 0.40 in (1920) |
| January 18 | 64.0°F (1965) | -29.9°F (1943) | 0.50 in (1929) |
| January 19 | 79.0°F (1921) | -24.0°F (1943) | 0.41 in (1975) |
| January 20 | 66.0°F (1986) | -29.9°F (1985) | 0.75 in (1906) |
| January 21 | 63.0°F (2009) | -23.1°F (1966) | 0.67 in (1986) |
| January 22 | 64.0°F (1942) | -22.0°F (1917) | 0.42 in (1902) |
| January 23 | 64.9°F (1931) | -26.0°F (1949) | 0.42 in (1948) |
| January 24 | 68.0°F (1981) | -24.0°F (1929) | 0.40 in (1895) |
| January 25 | 66.9°F (1973) | -20.9°F (1950) | 0.54 in (1946) |
| January 26 | 63.0°F (2015) | -20.9°F (1902) | 0.20 in (1904) |
| January 27 | 70.0°F (2015) | -26.0°F (1918) | 1.98 in (1944) |
| January 28 | 66.9°F (2015) | -26.0°F (1929) | 0.55 in (2000) |
| January 29 | 70.0°F (1931) | -31.0°F (1916) | 0.35 in (1900) |
| January 30 | 68.0°F (1925) | -29.9°F (1918) | 0.35 in (1905) |
| January 31 | 66.0°F (1989) | -29.9°F (1893) | 0.77 in (1949) |