December weather in Alta, UT
The average temperature in Alta in December is 22.3°F (14.5°F–30.2°F). Average precipitation: 5.13 inches. Average snowfall is 79.8 inches.
December is a winter month in Alta, and is cooler than the annual average of 39.1°F. Daily temperatures swing about 15.7°F between overnight low and afternoon high. Expect about 15 days with precipitation. Daylight averages about 9h 7m. For travel, December is a wet month.
Avg High
30.2°F
Avg Low
14.5°F
Precipitation
5.13 in
Snow
79.8 in
December records in Alta
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 52.0°F (1958) | -2.9°F (1975) | 2.45 in (1982) |
| December 2 | 52.0°F (2021) | -7.1°F (2006) | 2.86 in (1982) |
| December 3 | 51.1°F (1946) | -7.1°F (2006) | 2.27 in (1950) |
| December 4 | 52.0°F (1975) | -4.0°F (1978) | 2.13 in (1950) |
| December 5 | 48.0°F (1988) | -13.0°F (2013) | 1.88 in (1983) |
| December 6 | 48.9°F (1987) | -13.0°F (2013) | 2.00 in (2025) |
| December 7 | 51.1°F (1970) | -14.1°F (1978) | 1.70 in (1983) |
| December 8 | 48.9°F (2006) | -27.0°F (1978) | 1.66 in (1958) |
| December 9 | 55.9°F (1990) | -29.9°F (1978) | 1.95 in (1985) |
| December 10 | 54.0°F (1957) | -31.0°F (1978) | 1.94 in (1949) |
| December 11 | 55.0°F (1950) | -13.0°F (1961) | 1.42 in (1956) |
| December 12 | 51.1°F (1957) | -13.0°F (1961) | 2.79 in (1968) |
| December 13 | 53.1°F (1962) | -9.0°F (1967) | 2.94 in (2009) |
| December 14 | 59.0°F (1952) | -9.0°F (1967) | 1.83 in (1974) |
| December 15 | 55.0°F (1952) | -8.0°F (1975) | 2.20 in (1983) |
| December 16 | 52.0°F (1969) | -5.1°F (1987) | 1.98 in (2016) |
| December 17 | 54.0°F (1980) | -5.1°F (1978) | 1.54 in (1984) |
| December 18 | 57.9°F (1980) | -9.9°F (2016) | 2.00 in (1949) |
| December 19 | 54.0°F (1979) | -4.0°F (1945) | 1.35 in (2010) |
| December 20 | 48.9°F (2024) | -9.0°F (1998) | 2.66 in (2010) |
| December 21 | 51.1°F (1994) | -15.0°F (1990) | 2.11 in (2014) |
| December 22 | 48.9°F (1954) | -20.0°F (1990) | 3.18 in (1981) |
| December 23 | 51.1°F (1960) | -25.1°F (1990) | 1.71 in (1972) |
| December 24 | 55.0°F (1950) | -9.0°F (1974) | 3.55 in (1955) |
| December 25 | 50.0°F (1947) | -7.1°F (1962) | 5.00 in (2002) |
| December 26 | 54.0°F (1947) | -2.0°F (1952) | 2.65 in (1967) |
| December 27 | 55.9°F (1947) | -9.9°F (1988) | 2.04 in (1981) |
| December 28 | 52.0°F (1980) | -8.0°F (1982) | 1.48 in (1945) |
| December 29 | 48.9°F (1956) | -9.9°F (1990) | 2.00 in (1944) |
| December 30 | 53.1°F (1956) | -20.0°F (1990) | 1.85 in (2010) |
| December 31 | 52.0°F (1980) | -20.0°F (1978) | 2.40 in (1951) |