December weather in Superior, WI
The average temperature in Superior in December is 20.2°F (13.1°F–27.3°F). Average precipitation: 1.29 inches. Average snowfall is 12.3 inches.
December is a winter month in Superior, and is cooler than the annual average of 41.4°F. Daily temperatures swing about 14.2°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 8h 22m. For travel, December is cold.
Avg High
27.3°F
Avg Low
13.1°F
Precipitation
1.29 in
Snow
12.3 in
December records in Superior
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 60.1°F (1962) | -18.0°F (1919) | 1.32 in (2019) |
| December 2 | 55.0°F (1962) | -20.0°F (1976) | 0.42 in (1945) |
| December 3 | 59.0°F (1962) | -18.9°F (1985) | 0.69 in (1928) |
| December 4 | 57.9°F (1962) | -11.0°F (1940) | 0.80 in (1955) |
| December 5 | 55.9°F (1941) | -11.0°F (1955) | 1.80 in (1909) |
| December 6 | 46.0°F (1913) | -15.0°F (1955) | 0.42 in (1936) |
| December 7 | 55.9°F (1939) | -25.1°F (1976) | 0.93 in (1926) |
| December 8 | 46.0°F (1990) | -32.1°F (1995) | 0.70 in (1963) |
| December 9 | 52.0°F (1990) | -20.0°F (1927) | 0.60 in (2019) |
| December 10 | 54.0°F (1939) | -20.9°F (1919) | 0.94 in (2015) |
| December 11 | 52.0°F (1913) | -20.9°F (1977) | 0.50 in (1918) |
| December 12 | 50.0°F (1949) | -15.0°F (1962) | 0.79 in (1965) |
| December 13 | 51.1°F (1913) | -20.9°F (1985) | 0.85 in (1995) |
| December 14 | 52.0°F (1998) | -26.0°F (1926) | 0.42 in (2008) |
| December 15 | 48.0°F (1959) | -27.0°F (1985) | 0.66 in (1983) |
| December 16 | 50.0°F (1913) | -20.9°F (1919) | 1.02 in (1984) |
| December 17 | 45.0°F (1939) | -22.0°F (1983) | 0.77 in (1977) |
| December 18 | 48.0°F (1997) | -27.0°F (1983) | 0.47 in (2002) |
| December 19 | 41.0°F (2006) | -32.1°F (1983) | 0.30 in (1957) |
| December 20 | 54.0°F (1923) | -27.9°F (1983) | 0.30 in (1951) |
| December 21 | 45.0°F (1923) | -24.0°F (1989) | 0.33 in (2021) |
| December 22 | 46.0°F (1994) | -22.0°F (1983) | 0.50 in (2010) |
| December 23 | 45.0°F (1994) | -25.1°F (1983) | 0.61 in (2020) |
| December 24 | 46.0°F (1994) | -22.0°F (1921) | 0.47 in (2009) |
| December 25 | 46.9°F (1940) | -26.0°F (1933) | 1.09 in (2009) |
| December 26 | 46.9°F (2011) | -26.0°F (1933) | 0.84 in (2023) |
| December 27 | 44.1°F (2003) | -26.0°F (1964) | 1.25 in (2018) |
| December 28 | 42.1°F (2003) | -32.1°F (1917) | 1.41 in (1982) |
| December 29 | 50.0°F (1999) | -29.9°F (1917) | 1.00 in (2019) |
| December 30 | 50.0°F (1999) | -26.0°F (1917) | 1.08 in (2010) |
| December 31 | 44.1°F (1929) | -24.0°F (1967) | 0.98 in (2006) |