December weather in Wauwatosa, WI
The average temperature in Wauwatosa in December is 27.9°F (20.6°F–35.2°F). Average precipitation: 1.73 inches. Average snowfall is 9.8 inches.
December is a winter month in Wauwatosa, and is cooler than the annual average of 48.3°F. Daily temperatures swing about 14.6°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 8h 50m. For travel, December is cold.
Avg High
35.2°F
Avg Low
20.6°F
Precipitation
1.73 in
Snow
9.8 in
December records in Wauwatosa
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 64.0°F (1970) | 5.0°F (1976) | 0.97 in (1985) |
| December 2 | 63.0°F (1982) | -4.0°F (1976) | 1.22 in (1982) |
| December 3 | 64.0°F (1998) | 0.0°F (1976) | 1.02 in (1991) |
| December 4 | 66.0°F (2012) | 3.9°F (1976) | 1.52 in (1973) |
| December 5 | 68.0°F (2001) | 3.0°F (2005) | 0.57 in (1999) |
| December 6 | 59.0°F (1975) | -2.0°F (1977) | 0.49 in (1950) |
| December 7 | 62.1°F (1946) | -9.0°F (1972) | 0.85 in (1969) |
| December 8 | 63.0°F (1946) | -0.9°F (1976) | 1.01 in (1966) |
| December 9 | 62.1°F (1946) | -9.9°F (1958) | 1.51 in (2009) |
| December 10 | 54.0°F (1946) | -8.0°F (1958) | 1.31 in (1971) |
| December 11 | 59.0°F (1949) | -9.0°F (1972) | 1.12 in (1970) |
| December 12 | 59.0°F (1949) | -9.0°F (1962) | 0.94 in (2010) |
| December 13 | 55.0°F (1975) | -7.1°F (1956) | 0.40 in (2001) |
| December 14 | 61.0°F (2015) | -8.0°F (1985) | 1.23 in (2015) |
| December 15 | 57.0°F (1971) | -7.1°F (1958) | 1.64 in (1971) |
| December 16 | 57.0°F (1959) | -11.0°F (1951) | 0.60 in (1965) |
| December 17 | 48.9°F (1984) | -11.0°F (1951) | 0.38 in (2008) |
| December 18 | 54.0°F (2002) | -11.0°F (1983) | 0.30 in (1949) |
| December 19 | 50.0°F (1957) | -16.1°F (1983) | 0.94 in (1968) |
| December 20 | 51.1°F (1949) | -14.1°F (1963) | 1.08 in (2012) |
| December 21 | 55.9°F (1967) | -17.0°F (1989) | 1.33 in (2012) |
| December 22 | 53.1°F (1957) | -11.9°F (1989) | 0.75 in (2006) |
| December 23 | 54.0°F (1982) | -15.0°F (1983) | 0.67 in (2014) |
| December 24 | 57.0°F (2015) | -22.0°F (1983) | 1.50 in (1973) |
| December 25 | 60.1°F (1982) | -13.0°F (1983) | 1.35 in (2009) |
| December 26 | 53.1°F (1982) | -15.0°F (1962) | 0.76 in (1984) |
| December 27 | 53.1°F (2008) | -14.1°F (1950) | 0.90 in (1988) |
| December 28 | 61.0°F (1984) | -9.9°F (1961) | 0.75 in (1968) |
| December 29 | 63.0°F (1984) | -11.0°F (1976) | 1.34 in (2015) |
| December 30 | 55.9°F (2004) | -11.0°F (1963) | 1.25 in (1971) |
| December 31 | 55.0°F (1965) | -11.9°F (1968) | 0.90 in (1978) |