January weather in Wauwatosa, WI
The average temperature in Wauwatosa in January is 21.9°F (14.1°F–29.7°F). Average precipitation: 1.48 inches. Average snowfall is 11.0 inches.
January is a winter month in Wauwatosa, and is cooler than the annual average of 48.3°F. Daily temperatures swing about 15.6°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 9h 9m. For travel, January is cold.
Avg High
29.7°F
Avg Low
14.1°F
Precipitation
1.48 in
Snow
11.0 in
January records in Wauwatosa
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 54.0°F (2011) | -11.9°F (1968) | 0.87 in (1985) |
| January 2 | 55.9°F (2000) | -15.0°F (1979) | 0.79 in (2005) |
| January 3 | 55.0°F (1998) | -14.1°F (1979) | 0.92 in (1971) |
| January 4 | 51.1°F (2007) | -11.0°F (1959) | 0.92 in (1982) |
| January 5 | 54.0°F (2007) | -13.0°F (1979) | 0.78 in (1955) |
| January 6 | 53.1°F (2008) | -13.0°F (1999) | 0.50 in (1962) |
| January 7 | 59.0°F (2008) | -16.1°F (1968) | 0.50 in (1962) |
| January 8 | 55.9°F (1965) | -14.1°F (2014) | 0.45 in (2010) |
| January 9 | 53.1°F (2002) | -15.0°F (1982) | 1.00 in (1999) |
| January 10 | 52.0°F (1975) | -24.0°F (1982) | 1.24 in (1975) |
| January 11 | 55.0°F (2018) | -16.1°F (1979) | 0.55 in (2013) |
| January 12 | 57.9°F (2012) | -13.0°F (1974) | 0.79 in (1960) |
| January 13 | 55.0°F (1961) | -11.9°F (1963) | 1.35 in (2005) |
| January 14 | 46.9°F (2014) | -13.0°F (1994) | 0.66 in (1979) |
| January 15 | 54.0°F (1953) | -22.0°F (1972) | 0.65 in (1960) |
| January 16 | 53.1°F (1949) | -20.0°F (1977) | 0.53 in (1969) |
| January 17 | 52.0°F (1990) | -24.0°F (1982) | 0.50 in (2017) |
| January 18 | 53.1°F (1973) | -24.0°F (1994) | 0.70 in (2011) |
| January 19 | 50.0°F (1973) | -23.1°F (1994) | 0.56 in (1952) |
| January 20 | 50.0°F (1968) | -26.0°F (1985) | 1.13 in (1988) |
| January 21 | 54.0°F (1957) | -18.9°F (1963) | 0.42 in (1990) |
| January 22 | 55.0°F (2017) | -11.9°F (1951) | 0.77 in (1999) |
| January 23 | 48.9°F (1964) | -24.0°F (1963) | 1.50 in (1965) |
| January 24 | 50.0°F (1981) | -15.0°F (1963) | 1.50 in (1965) |
| January 25 | 59.0°F (1950) | -11.9°F (1963) | 1.00 in (1957) |
| January 26 | 57.0°F (1973) | -14.1°F (1957) | 0.53 in (1965) |
| January 27 | 55.0°F (2002) | -14.1°F (1963) | 1.02 in (1974) |
| January 28 | 48.0°F (2008) | -18.0°F (1966) | 0.55 in (1949) |
| January 29 | 48.0°F (1968) | -22.0°F (1966) | 0.65 in (2006) |
| January 30 | 60.1°F (2013) | -27.0°F (1951) | 1.57 in (1947) |
| January 31 | 55.9°F (1989) | -17.0°F (1996) | 0.28 in (2002) |