December weather in Watertown, WI
The average temperature in Watertown in December is 24.7°F (17.3°F–32.0°F). Average precipitation: 1.75 inches. Average snowfall is 8.5 inches.
December is a winter month in Watertown, and is cooler than the annual average of 46.4°F. Daily temperatures swing about 14.7°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 8h 49m. For travel, December is cold.
Avg High
32.0°F
Avg Low
17.3°F
Precipitation
1.75 in
Snow
8.5 in
December records in Watertown
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 62.1°F (1970) | -23.1°F (1893) | 0.65 in (1985) |
| December 2 | 61.0°F (1962) | -20.9°F (1893) | 3.00 in (2007) |
| December 3 | 62.1°F (1982) | -16.1°F (1940) | 0.76 in (1978) |
| December 4 | 64.0°F (1998) | -27.0°F (1893) | 0.95 in (1925) |
| December 5 | 60.1°F (1960) | -2.9°F (2005) | 1.12 in (1973) |
| December 6 | 66.0°F (2001) | -15.0°F (1893) | 0.77 in (1943) |
| December 7 | 59.0°F (1894) | -23.1°F (1893) | 0.60 in (1998) |
| December 8 | 60.1°F (1946) | -9.0°F (1917) | 1.17 in (1966) |
| December 9 | 61.0°F (1946) | -11.0°F (1958) | 0.88 in (2009) |
| December 10 | 54.0°F (1911) | -13.0°F (1919) | 1.16 in (1897) |
| December 11 | 57.0°F (1949) | -15.0°F (1893) | 1.66 in (1970) |
| December 12 | 57.9°F (1949) | -9.9°F (2013) | 0.80 in (1909) |
| December 13 | 55.9°F (1991) | -27.0°F (1893) | 0.56 in (1901) |
| December 14 | 60.1°F (2015) | -18.0°F (1901) | 1.59 in (2015) |
| December 15 | 57.0°F (2015) | -17.0°F (1901) | 1.42 in (1971) |
| December 16 | 64.9°F (2021) | -11.9°F (1932) | 0.95 in (1992) |
| December 17 | 55.0°F (1984) | -17.0°F (1903) | 0.35 in (1912) |
| December 18 | 53.1°F (1923) | -16.1°F (1983) | 0.25 in (1908) |
| December 19 | 54.0°F (2002) | -23.1°F (1983) | 0.99 in (1968) |
| December 20 | 55.9°F (1918) | -22.0°F (1983) | 0.90 in (1987) |
| December 21 | 54.0°F (1967) | -18.9°F (1989) | 1.15 in (2012) |
| December 22 | 52.0°F (1957) | -18.9°F (1989) | 0.37 in (1931) |
| December 23 | 53.1°F (1941) | -20.0°F (1983) | 1.09 in (2007) |
| December 24 | 57.0°F (2015) | -27.0°F (1983) | 0.69 in (1959) |
| December 25 | 57.0°F (1982) | -23.1°F (2000) | 0.85 in (2009) |
| December 26 | 57.9°F (1982) | -23.1°F (1914) | 0.61 in (1936) |
| December 27 | 48.9°F (1946) | -20.0°F (1933) | 1.86 in (1942) |
| December 28 | 52.0°F (1982) | -18.9°F (1924) | 1.02 in (1946) |
| December 29 | 61.0°F (1984) | -15.0°F (1917) | 0.92 in (2015) |
| December 30 | 55.0°F (1936) | -13.0°F (1909) | 1.13 in (1936) |
| December 31 | 55.0°F (1965) | -16.1°F (1963) | 1.20 in (1893) |