December weather in Merrill, WI
The average temperature in Merrill in December is 19.4°F (11.4°F–27.4°F). Average precipitation: 1.53 inches. Average snowfall is 11.6 inches.
December is a winter month in Merrill, and is cooler than the annual average of 42.1°F. Daily temperatures swing about 16°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 8h 34m. For travel, December is cold.
Avg High
27.4°F
Avg Low
11.4°F
Precipitation
1.53 in
Snow
11.6 in
December records in Merrill
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 62.1°F (1909) | -20.0°F (1976) | 0.66 in (2019) |
| December 2 | 55.9°F (1998) | -20.9°F (1978) | 0.70 in (2007) |
| December 3 | 61.0°F (1982) | -25.1°F (1919) | 0.50 in (1934) |
| December 4 | 59.0°F (1916) | -23.1°F (1919) | 2.00 in (1990) |
| December 5 | 55.0°F (2017) | -13.0°F (1976) | 0.42 in (1925) |
| December 6 | 61.0°F (2001) | -18.0°F (1955) | 0.93 in (2001) |
| December 7 | 46.0°F (1911) | -29.0°F (1972) | 0.29 in (1949) |
| December 8 | 52.0°F (1946) | -27.0°F (1976) | 0.54 in (1947) |
| December 9 | 55.0°F (1930) | -23.1°F (1927) | 1.10 in (1919) |
| December 10 | 48.0°F (1939) | -20.9°F (1919) | 1.05 in (1971) |
| December 11 | 52.0°F (1913) | -25.1°F (1977) | 0.66 in (2021) |
| December 12 | 54.0°F (1913) | -18.9°F (1977) | 0.94 in (1965) |
| December 13 | 55.0°F (1913) | -22.0°F (1976) | 0.65 in (1991) |
| December 14 | 48.0°F (1912) | -24.0°F (1919) | 1.20 in (1975) |
| December 15 | 51.1°F (1998) | -24.0°F (1919) | 1.02 in (2022) |
| December 16 | 55.0°F (2021) | -24.0°F (1919) | 0.95 in (1940) |
| December 17 | 48.0°F (1939) | -23.1°F (1932) | 0.65 in (1908) |
| December 18 | 46.0°F (1923) | -23.1°F (1983) | 0.58 in (1990) |
| December 19 | 55.0°F (1923) | -31.0°F (1983) | 0.64 in (1939) |
| December 20 | 44.1°F (1956) | -29.0°F (1983) | 0.41 in (1987) |
| December 21 | 48.9°F (1967) | -27.0°F (1985) | 0.40 in (2004) |
| December 22 | 46.0°F (1941) | -27.0°F (1985) | 0.68 in (1920) |
| December 23 | 48.0°F (1932) | -26.0°F (1983) | 1.46 in (2006) |
| December 24 | 43.0°F (2020) | -27.9°F (1951) | 1.20 in (2015) |
| December 25 | 48.9°F (2023) | -27.0°F (1933) | 0.60 in (1982) |
| December 26 | 50.0°F (2023) | -27.0°F (1933) | 0.79 in (2016) |
| December 27 | 46.0°F (2023) | -27.9°F (1933) | 0.52 in (1971) |
| December 28 | 45.0°F (1928) | -25.1°F (1924) | 1.13 in (1959) |
| December 29 | 46.0°F (1984) | -24.0°F (1976) | 0.79 in (2019) |
| December 30 | 48.0°F (1936) | -24.0°F (1976) | 1.24 in (1972) |
| December 31 | 48.0°F (1965) | -26.0°F (1946) | 0.88 in (1906) |