December weather in Janesville, MN
The average temperature in Janesville in December is 19.8°F (12.1°F–27.5°F). Average precipitation: 1.50 inches. Average snowfall is 11.9 inches.
December is a winter month in Janesville, and is cooler than the annual average of 44.6°F. Daily temperatures swing about 15.4°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 8h 42m. For travel, December is cold.
Avg High
27.5°F
Avg Low
12.1°F
Precipitation
1.50 in
Snow
11.9 in
December records in Janesville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 60.1°F (1962) | -13.0°F (1964) | 1.10 in (1985) |
| December 2 | 68.0°F (1998) | -14.1°F (1919) | 0.84 in (2007) |
| December 3 | 61.0°F (1962) | -24.0°F (1940) | 0.94 in (1934) |
| December 4 | 63.0°F (1998) | -18.0°F (2025) | 0.82 in (1953) |
| December 5 | 62.1°F (2001) | -16.1°F (2005) | 0.60 in (1948) |
| December 6 | 63.0°F (2001) | -18.0°F (1917) | 0.26 in (1993) |
| December 7 | 53.1°F (1946) | -20.9°F (1972) | 0.83 in (1926) |
| December 8 | 57.9°F (1946) | -20.0°F (1917) | 0.54 in (1966) |
| December 9 | 60.1°F (1939) | -20.9°F (1958) | 0.62 in (2009) |
| December 10 | 52.0°F (1939) | -23.1°F (1919) | 0.71 in (2003) |
| December 11 | 54.0°F (1979) | -20.0°F (1917) | 1.10 in (1970) |
| December 12 | 50.0°F (1998) | -17.0°F (1932) | 1.32 in (2010) |
| December 13 | 54.0°F (1968) | -27.9°F (1917) | 0.40 in (1926) |
| December 14 | 53.1°F (1998) | -29.9°F (1917) | 0.95 in (1975) |
| December 15 | 55.0°F (1998) | -24.0°F (1926) | 0.69 in (1996) |
| December 16 | 62.1°F (2021) | -20.9°F (1932) | 1.27 in (1940) |
| December 17 | 57.0°F (1939) | -27.0°F (1983) | 0.34 in (1961) |
| December 18 | 51.1°F (1939) | -32.1°F (1983) | 0.24 in (2000) |
| December 19 | 48.9°F (1923) | -34.1°F (1983) | 0.47 in (2000) |
| December 20 | 46.9°F (1949) | -29.9°F (1983) | 0.38 in (1999) |
| December 21 | 53.1°F (1967) | -32.1°F (1916) | 0.70 in (1920) |
| December 22 | 52.0°F (1941) | -32.1°F (1916) | 0.52 in (1984) |
| December 23 | 48.0°F (1936) | -33.0°F (1983) | 0.75 in (1969) |
| December 24 | 48.9°F (2023) | -35.0°F (1983) | 0.80 in (1996) |
| December 25 | 53.1°F (2023) | -24.0°F (1983) | 1.34 in (1945) |
| December 26 | 55.9°F (1936) | -24.0°F (1990) | 0.68 in (2016) |
| December 27 | 46.9°F (1959) | -29.0°F (1950) | 0.52 in (1988) |
| December 28 | 48.9°F (1984) | -25.1°F (1924) | 1.78 in (1982) |
| December 29 | 48.0°F (2024) | -25.1°F (1917) | 0.95 in (2019) |
| December 30 | 48.9°F (1949) | -22.0°F (1917) | 0.73 in (1923) |
| December 31 | 52.0°F (2004) | -25.1°F (1973) | 0.54 in (2006) |