December weather in Altamont, UT
The average temperature in Altamont in December is 18.9°F (8.4°F–29.4°F). Average precipitation: 0.62 inches. Average snowfall is 9.0 inches.
December is a winter month in Altamont, and is cooler than the annual average of 42.2°F. Daily temperatures swing about 21°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 9h 8m. For travel, December is cold.
Avg High
29.4°F
Avg Low
8.4°F
Precipitation
0.62 in
Snow
9.0 in
December records in Altamont
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 55.0°F (1998) | -5.1°F (1979) | 0.90 in (1982) |
| December 2 | 54.0°F (1995) | -0.9°F (1991) | 0.43 in (1955) |
| December 3 | 64.0°F (1977) | -9.0°F (1978) | 0.21 in (1961) |
| December 4 | 57.0°F (2008) | -2.9°F (2009) | 0.45 in (1966) |
| December 5 | 59.0°F (1958) | -11.9°F (2013) | 0.22 in (1972) |
| December 6 | 57.9°F (1958) | -14.1°F (2013) | 0.54 in (1966) |
| December 7 | 57.9°F (1958) | -9.9°F (2013) | 3.90 in (2007) |
| December 8 | 54.0°F (1957) | -23.1°F (1978) | 0.28 in (2009) |
| December 9 | 55.9°F (2025) | -22.0°F (1978) | 0.32 in (2007) |
| December 10 | 55.0°F (2025) | -11.9°F (2013) | 0.16 in (1970) |
| December 11 | 60.1°F (1958) | -13.0°F (1961) | 0.08 in (1996) |
| December 12 | 54.0°F (2025) | -15.0°F (1961) | 0.33 in (1956) |
| December 13 | 50.0°F (2025) | -13.0°F (1972) | 0.34 in (2009) |
| December 14 | 50.0°F (2025) | -13.0°F (1972) | 0.28 in (2019) |
| December 15 | 48.9°F (1981) | -15.0°F (1972) | 0.14 in (2001) |
| December 16 | 51.1°F (1977) | -14.1°F (1972) | 0.27 in (1957) |
| December 17 | 53.1°F (2025) | -11.9°F (2022) | 0.55 in (2016) |
| December 18 | 46.9°F (1969) | -11.0°F (2022) | 0.44 in (1977) |
| December 19 | 46.9°F (1969) | -9.0°F (2022) | 0.42 in (2012) |
| December 20 | 51.1°F (2025) | -8.0°F (1998) | 0.61 in (2010) |
| December 21 | 52.0°F (2025) | -32.1°F (1990) | 1.95 in (2010) |
| December 22 | 57.0°F (2025) | -32.1°F (1990) | 0.50 in (2015) |
| December 23 | 53.1°F (2025) | -32.1°F (1990) | 0.55 in (1987) |
| December 24 | 52.0°F (2005) | -27.9°F (1990) | 0.38 in (1983) |
| December 25 | 53.1°F (2025) | -16.1°F (1990) | 0.45 in (1971) |
| December 26 | 51.1°F (1980) | -13.0°F (1962) | 1.25 in (1966) |
| December 27 | 51.1°F (1980) | -9.9°F (1962) | 2.01 in (1966) |
| December 28 | 50.0°F (1980) | -11.0°F (1954) | 0.30 in (2020) |
| December 29 | 50.0°F (1980) | -9.9°F (1969) | 0.40 in (1992) |
| December 30 | 57.0°F (2017) | -15.0°F (1990) | 0.46 in (1973) |
| December 31 | 57.9°F (2017) | -18.9°F (1978) | 0.29 in (2022) |