December weather in Mentor, MN
The average temperature in Mentor in December is 13.5°F (5.6°F–21.3°F). Average precipitation: 0.78 inches. Average snowfall is 12.4 inches.
December is a winter month in Mentor, and is cooler than the annual average of 39.8°F. Daily temperatures swing about 15.7°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 8h 14m. For travel, December is cold.
Avg High
21.3°F
Avg Low
5.6°F
Precipitation
0.78 in
Snow
12.4 in
December records in Mentor
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 55.9°F (1962) | -24.0°F (1919) | 0.44 in (2019) |
| December 2 | 55.0°F (1982) | -25.1°F (1978) | 0.36 in (2007) |
| December 3 | 55.9°F (1941) | -22.0°F (1940) | 0.50 in (1951) |
| December 4 | 55.0°F (1941) | -18.9°F (1991) | 0.60 in (1922) |
| December 5 | 48.9°F (1988) | -23.1°F (1955) | 0.65 in (1960) |
| December 6 | 52.0°F (1939) | -27.9°F (1972) | 0.60 in (1916) |
| December 7 | 52.0°F (1939) | -27.0°F (1936) | 0.50 in (1917) |
| December 8 | 53.1°F (2023) | -29.9°F (1922) | 0.48 in (1945) |
| December 9 | 54.0°F (2024) | -26.0°F (1927) | 0.45 in (2024) |
| December 10 | 45.0°F (1939) | -29.9°F (1977) | 0.41 in (2025) |
| December 11 | 51.1°F (1928) | -27.0°F (1945) | 0.57 in (1949) |
| December 12 | 48.9°F (1939) | -24.0°F (1917) | 0.35 in (2018) |
| December 13 | 42.1°F (1959) | -31.0°F (1917) | 0.50 in (1968) |
| December 14 | 45.0°F (2002) | -31.0°F (1916) | 0.56 in (2022) |
| December 15 | 42.1°F (1939) | -33.0°F (1919) | 0.34 in (1927) |
| December 16 | 51.1°F (1939) | -32.1°F (1953) | 0.57 in (1984) |
| December 17 | 46.0°F (1939) | -27.9°F (1916) | 0.47 in (1942) |
| December 18 | 48.0°F (1923) | -38.0°F (1929) | 0.26 in (1939) |
| December 19 | 46.9°F (1923) | -43.1°F (1955) | 0.30 in (1922) |
| December 20 | 48.0°F (1923) | -38.9°F (1924) | 0.23 in (1967) |
| December 21 | 44.1°F (1923) | -33.0°F (1963) | 0.30 in (2010) |
| December 22 | 41.0°F (2003) | -29.9°F (1945) | 0.34 in (1915) |
| December 23 | 53.1°F (2023) | -32.1°F (1951) | 1.00 in (1917) |
| December 24 | 46.0°F (1957) | -29.0°F (1914) | 0.54 in (2023) |
| December 25 | 41.0°F (1928) | -36.0°F (1933) | 0.50 in (1916) |
| December 26 | 43.0°F (1994) | -38.0°F (1933) | 1.00 in (1916) |
| December 27 | 46.9°F (2011) | -31.0°F (1924) | 0.36 in (2009) |
| December 28 | 37.9°F (1931) | -38.9°F (1933) | 0.36 in (1940) |
| December 29 | 51.1°F (2024) | -34.1°F (1917) | 0.55 in (2019) |
| December 30 | 42.1°F (1999) | -35.0°F (1976) | 0.50 in (1918) |
| December 31 | 37.9°F (1929) | -36.9°F (1967) | 0.64 in (2006) |