December weather in Mendon, UT
The average temperature in Mendon in December is 23.6°F (14.1°F–33.0°F). Average precipitation: 1.69 inches. Average snowfall is 13.2 inches.
December is a winter month in Mendon, and is cooler than the annual average of 46.1°F. Daily temperatures swing about 18.9°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 8h 59m. For travel, December is cold.
Avg High
33.0°F
Avg Low
14.1°F
Precipitation
1.69 in
Snow
13.2 in
December records in Mendon
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 64.0°F (1995) | -9.0°F (1991) | 0.89 in (1983) |
| December 2 | 64.9°F (1995) | -2.9°F (2015) | 0.82 in (2005) |
| December 3 | 57.0°F (1998) | 0.0°F (2022) | 0.73 in (2012) |
| December 4 | 61.0°F (1998) | -25.1°F (1992) | 1.20 in (1983) |
| December 5 | 53.1°F (1977) | -18.0°F (1972) | 0.84 in (1980) |
| December 6 | 55.0°F (1987) | -18.0°F (1972) | 0.44 in (2001) |
| December 7 | 57.0°F (1987) | -9.0°F (2005) | 0.45 in (2001) |
| December 8 | 55.9°F (1977) | -11.9°F (1971) | 0.47 in (1982) |
| December 9 | 53.1°F (1981) | -26.0°F (1972) | 0.39 in (1992) |
| December 10 | 55.9°F (1981) | -40.0°F (1972) | 0.45 in (1983) |
| December 11 | 62.1°F (1981) | -35.0°F (1972) | 0.46 in (1996) |
| December 12 | 59.0°F (2025) | -36.0°F (1972) | 0.34 in (2022) |
| December 13 | 63.0°F (2014) | -16.1°F (1985) | 0.59 in (1996) |
| December 14 | 53.1°F (2025) | -20.0°F (1972) | 0.48 in (2019) |
| December 15 | 54.0°F (1977) | -25.1°F (1972) | 0.57 in (2021) |
| December 16 | 53.1°F (1981) | -22.0°F (1972) | 0.61 in (2016) |
| December 17 | 52.0°F (2025) | -8.0°F (1972) | 0.32 in (2002) |
| December 18 | 57.9°F (2025) | -16.1°F (1984) | 0.47 in (1977) |
| December 19 | 46.0°F (1979) | -13.0°F (1984) | 1.27 in (2010) |
| December 20 | 57.9°F (2025) | -17.0°F (1998) | 0.67 in (2010) |
| December 21 | 55.0°F (1981) | -20.0°F (1990) | 0.64 in (1996) |
| December 22 | 62.1°F (2025) | -22.0°F (1990) | 0.91 in (2015) |
| December 23 | 60.1°F (2025) | -43.1°F (1990) | 0.46 in (1987) |
| December 24 | 57.9°F (2025) | -44.0°F (1990) | 0.71 in (2021) |
| December 25 | 59.0°F (2025) | -27.0°F (1987) | 0.73 in (2025) |
| December 26 | 57.9°F (2025) | -23.1°F (1987) | 0.75 in (2003) |
| December 27 | 51.1°F (2025) | -22.0°F (1988) | 0.60 in (1996) |
| December 28 | 48.9°F (1980) | -16.1°F (1987) | 0.89 in (2022) |
| December 29 | 50.0°F (1980) | -14.1°F (1983) | 0.57 in (2010) |
| December 30 | 52.0°F (2011) | -33.0°F (1990) | 1.00 in (2003) |
| December 31 | 57.0°F (1996) | -27.0°F (1978) | 0.47 in (2005) |