December weather in Superior, WY

The average temperature in Superior in December is 21.4°F (13.4°F–29.5°F). Average precipitation: 0.31 inches. Average snowfall is 5.8 inches.

December is a winter month in Superior, and is cooler than the annual average of 43.7°F. Daily temperatures swing about 16.1°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 8h 59m. For travel, December is cold.

Avg High
29.5°F
Avg Low
13.4°F
Precipitation
0.31 in
Snow
5.8 in

December records in Superior

Date Record High Record Low Record Precip
December 1 57.0°F (1995) -7.1°F (1991) 0.51 in (1983)
December 2 57.9°F (2021) 0.0°F (1971) 0.38 in (1973)
December 3 53.1°F (1956) -4.0°F (1967) 0.24 in (1950)
December 4 54.0°F (2021) -13.0°F (1972) 0.77 in (1972)
December 5 51.1°F (1986) -22.0°F (1972) 0.21 in (1956)
December 6 54.0°F (1981) -18.8°F (2013) 0.17 in (1956)
December 7 51.1°F (1981) -18.0°F (2005) 0.15 in (1994)
December 8 51.1°F (1976) -20.0°F (2005) 0.70 in (1985)
December 9 53.1°F (1975) -20.9°F (1972) 0.50 in (1997)
December 10 53.1°F (1981) -27.9°F (1972) 0.34 in (1949)
December 11 53.1°F (2025) -24.0°F (1972) 0.14 in (1949)
December 12 51.1°F (2004) -11.9°F (1972) 0.94 in (1975)
December 13 51.1°F (2025) -9.9°F (1967) 0.21 in (1975)
December 14 52.0°F (1977) -9.9°F (2008) 0.11 in (1975)
December 15 51.1°F (2006) -16.1°F (1972) 0.27 in (1992)
December 16 57.9°F (2013) -11.9°F (1964) 0.27 in (1967)
December 17 57.0°F (1980) -16.1°F (1964) 0.20 in (1970)
December 18 51.1°F (1980) -11.9°F (1964) 0.40 in (1977)
December 19 54.0°F (2025) -17.0°F (1990) 0.35 in (2010)
December 20 51.1°F (1981) -25.1°F (1990) 0.25 in (1967)
December 21 57.9°F (2025) -29.0°F (1990) 0.19 in (1963)
December 22 59.0°F (2025) -29.0°F (1990) 0.37 in (1979)
December 23 55.9°F (2025) -16.1°F (1990) 0.27 in (1987)
December 24 51.1°F (2025) -16.1°F (1983) 0.22 in (1964)
December 25 55.0°F (2025) -17.0°F (1987) 0.44 in (1968)
December 26 52.0°F (1980) -17.0°F (1952) 0.28 in (2003)
December 27 51.1°F (1980) -15.0°F (1948) 0.22 in (1948)
December 28 48.9°F (2005) -14.8°F (2015) 0.13 in (1948)
December 29 46.9°F (2017) -11.0°F (1978) 0.43 in (1972)
December 30 52.0°F (1980) -22.0°F (1978) 0.46 in (1965)
December 31 53.1°F (1980) -29.0°F (1978) 0.38 in (1975)

Other months in Superior