December weather in Upton, WY
The average temperature in Upton in December is 21.8°F (10.3°F–33.2°F). Average precipitation: 0.45 inches. Average snowfall is 8.3 inches.
December is a winter month in Upton, and is cooler than the annual average of 44.8°F. Daily temperatures swing about 22.9°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 8h 42m. For travel, December is cold.
Avg High
33.2°F
Avg Low
10.3°F
Precipitation
0.45 in
Snow
8.3 in
December records in Upton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 66.0°F (1995) | -20.0°F (1985) | 0.40 in (1996) |
| December 2 | 61.0°F (2021) | -27.9°F (1985) | 0.30 in (2018) |
| December 3 | 57.0°F (2024) | -11.9°F (1978) | 0.33 in (2017) |
| December 4 | 59.0°F (1975) | -11.0°F (1972) | 0.28 in (1983) |
| December 5 | 59.0°F (1987) | -32.1°F (1972) | 0.25 in (1979) |
| December 6 | 54.0°F (2020) | -32.1°F (1972) | 0.57 in (1969) |
| December 7 | 59.0°F (2020) | -26.0°F (1972) | 0.24 in (1951) |
| December 8 | 57.0°F (1981) | -35.0°F (1972) | 0.40 in (1917) |
| December 9 | 60.1°F (2020) | -27.9°F (1977) | 0.60 in (1916) |
| December 10 | 61.0°F (1981) | -29.9°F (1972) | 0.51 in (2021) |
| December 11 | 59.0°F (1990) | -25.1°F (1972) | 1.00 in (1949) |
| December 12 | 57.9°F (1921) | -20.9°F (2000) | 0.36 in (2018) |
| December 13 | 60.1°F (1988) | -18.0°F (1926) | 0.37 in (2022) |
| December 14 | 62.1°F (1998) | -25.1°F (1926) | 0.40 in (1990) |
| December 15 | 57.0°F (1924) | -22.0°F (1922) | 0.30 in (1909) |
| December 16 | 55.9°F (1962) | -27.0°F (1964) | 0.40 in (1927) |
| December 17 | 57.0°F (1980) | -38.9°F (1964) | 0.95 in (1908) |
| December 18 | 57.9°F (1979) | -31.0°F (1924) | 0.40 in (1973) |
| December 19 | 57.9°F (2023) | -32.1°F (1924) | 0.40 in (1921) |
| December 20 | 57.9°F (2023) | -27.0°F (1983) | 0.24 in (1985) |
| December 21 | 54.0°F (1915) | -38.0°F (1983) | 0.60 in (1996) |
| December 22 | 59.0°F (2025) | -41.1°F (1989) | 0.20 in (1966) |
| December 23 | 55.9°F (1955) | -36.0°F (1983) | 0.24 in (2007) |
| December 24 | 66.9°F (2025) | -42.0°F (1983) | 0.33 in (1948) |
| December 25 | 62.1°F (2025) | -35.0°F (1983) | 0.28 in (1996) |
| December 26 | 57.0°F (2025) | -26.0°F (1996) | 0.76 in (2016) |
| December 27 | 55.0°F (1980) | -18.9°F (1920) | 0.25 in (1926) |
| December 28 | 54.0°F (1920) | -18.9°F (1990) | 4.10 in (1917) |
| December 29 | 55.9°F (1965) | -34.1°F (1990) | 0.53 in (1915) |
| December 30 | 52.0°F (1965) | -35.0°F (1990) | 0.26 in (2018) |
| December 31 | 52.0°F (2025) | -34.1°F (1978) | 0.30 in (1924) |