December weather in Alton, UT
The average temperature in Alton in December is 29.4°F (17.8°F–41.0°F). Average precipitation: 1.83 inches. Average snowfall is 14.1 inches.
December is a winter month in Alton, and is cooler than the annual average of 47.3°F. Daily temperatures swing about 23.2°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 9h 26m. For travel, December is cold.
Avg High
41.0°F
Avg Low
17.8°F
Precipitation
1.83 in
Snow
14.1 in
December records in Alton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 63.0°F (2008) | 0.0°F (2007) | 1.37 in (2007) |
| December 2 | 62.1°F (2021) | -2.0°F (1967) | 0.55 in (1952) |
| December 3 | 64.9°F (1958) | 1.0°F (1955) | 0.91 in (1966) |
| December 4 | 64.0°F (1958) | -0.9°F (1955) | 1.05 in (1954) |
| December 5 | 62.1°F (1939) | -9.0°F (2013) | 0.67 in (1966) |
| December 6 | 61.0°F (1962) | -7.1°F (2013) | 3.21 in (1966) |
| December 7 | 61.0°F (1958) | -6.0°F (1951) | 1.02 in (1918) |
| December 8 | 62.1°F (1940) | -6.0°F (1978) | 0.77 in (1972) |
| December 9 | 66.9°F (1962) | -15.0°F (1919) | 0.96 in (1931) |
| December 10 | 64.0°F (1950) | -15.0°F (1972) | 0.98 in (1996) |
| December 11 | 66.0°F (2025) | -9.0°F (1932) | 0.47 in (1984) |
| December 12 | 63.0°F (1921) | -9.0°F (1972) | 0.83 in (1940) |
| December 13 | 64.0°F (1921) | -9.9°F (1931) | 1.70 in (2009) |
| December 14 | 59.0°F (2025) | -8.0°F (1940) | 0.73 in (1933) |
| December 15 | 61.0°F (2025) | -2.0°F (1972) | 0.65 in (1915) |
| December 16 | 64.9°F (1980) | 0.0°F (1932) | 1.68 in (2016) |
| December 17 | 63.0°F (1958) | -2.0°F (1928) | 1.05 in (1978) |
| December 18 | 60.1°F (1958) | -4.0°F (1924) | 2.02 in (2010) |
| December 19 | 62.1°F (1917) | -9.9°F (1924) | 1.20 in (1921) |
| December 20 | 60.1°F (1950) | -8.0°F (1924) | 1.60 in (1921) |
| December 21 | 60.1°F (2005) | -20.0°F (1990) | 3.08 in (2010) |
| December 22 | 59.0°F (1950) | -24.0°F (1990) | 1.40 in (2010) |
| December 23 | 61.0°F (1950) | -17.0°F (1990) | 1.38 in (2021) |
| December 24 | 60.1°F (1950) | -17.0°F (1990) | 1.07 in (2016) |
| December 25 | 61.0°F (1980) | -5.1°F (1948) | 1.58 in (2025) |
| December 26 | 64.0°F (1980) | -16.1°F (1916) | 1.25 in (2003) |
| December 27 | 61.0°F (1980) | -18.9°F (1916) | 1.30 in (1984) |
| December 28 | 62.1°F (1980) | -11.9°F (1916) | 1.20 in (1992) |
| December 29 | 63.0°F (2017) | -8.0°F (1982) | 1.05 in (2004) |
| December 30 | 60.1°F (1945) | -11.0°F (1990) | 0.72 in (2010) |
| December 31 | 63.0°F (1963) | -9.0°F (2010) | 1.06 in (1936) |