December weather in Delta, UT
The average temperature in Delta in December is 27.1°F (14.8°F–39.4°F). Average precipitation: 0.59 inches. Average snowfall is 4.4 inches.
December is a winter month in Delta, and is cooler than the annual average of 50.6°F. Daily temperatures swing about 24.6°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 9h 14m. For travel, December is cold.
Avg High
39.4°F
Avg Low
14.8°F
Precipitation
0.59 in
Snow
4.4 in
December records in Delta
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 70.0°F (1995) | -4.0°F (2006) | 0.88 in (1947) |
| December 2 | 64.9°F (1998) | -2.0°F (1967) | 0.55 in (1985) |
| December 3 | 64.9°F (1998) | -5.1°F (2006) | 0.41 in (1941) |
| December 4 | 63.0°F (1977) | -7.1°F (2006) | 0.20 in (2001) |
| December 5 | 61.0°F (1975) | -20.9°F (2013) | 0.28 in (1966) |
| December 6 | 61.0°F (1939) | -22.0°F (2013) | 1.34 in (1966) |
| December 7 | 62.1°F (1939) | -4.0°F (2013) | 0.45 in (1946) |
| December 8 | 64.9°F (1939) | -7.1°F (2013) | 0.27 in (2007) |
| December 9 | 66.0°F (1939) | -20.0°F (1972) | 0.48 in (2021) |
| December 10 | 64.0°F (1981) | -24.0°F (1972) | 0.34 in (1949) |
| December 11 | 64.0°F (1993) | -17.0°F (1972) | 0.10 in (1964) |
| December 12 | 60.1°F (2010) | -23.1°F (1972) | 0.33 in (1940) |
| December 13 | 57.9°F (1996) | -9.9°F (1972) | 0.23 in (2009) |
| December 14 | 60.1°F (1977) | -22.0°F (1972) | 0.21 in (1983) |
| December 15 | 64.0°F (1977) | -25.1°F (1940) | 0.40 in (2021) |
| December 16 | 57.9°F (1962) | -14.1°F (1940) | 0.20 in (1967) |
| December 17 | 62.1°F (1939) | -9.0°F (1971) | 0.31 in (1961) |
| December 18 | 72.0°F (2025) | -7.1°F (1971) | 0.25 in (2008) |
| December 19 | 62.1°F (2023) | -8.0°F (2012) | 0.32 in (1943) |
| December 20 | 63.0°F (2025) | -9.9°F (2012) | 0.63 in (2010) |
| December 21 | 59.0°F (2025) | -20.0°F (1998) | 0.58 in (2010) |
| December 22 | 64.0°F (2005) | -23.1°F (1990) | 0.21 in (1948) |
| December 23 | 66.9°F (2025) | -29.9°F (1990) | 0.17 in (1945) |
| December 24 | 66.0°F (2025) | -29.0°F (1990) | 0.86 in (1971) |
| December 25 | 64.0°F (2025) | -15.0°F (1948) | 0.55 in (1959) |
| December 26 | 57.9°F (1980) | -18.0°F (1962) | 0.88 in (2003) |
| December 27 | 57.9°F (1955) | -17.0°F (1988) | 0.30 in (1948) |
| December 28 | 55.9°F (1980) | -9.9°F (1962) | 0.56 in (1992) |
| December 29 | 62.1°F (2024) | -15.0°F (1990) | 0.60 in (2004) |
| December 30 | 55.9°F (2017) | -23.1°F (1990) | 1.45 in (1951) |
| December 31 | 62.1°F (1996) | -15.0°F (1990) | 1.60 in (1951) |