December weather in Fillmore, UT
The average temperature in Fillmore in December is 29.2°F (20.7°F–37.7°F). Average precipitation: 1.47 inches. Average snowfall is 12.4 inches.
December is a winter month in Fillmore, and is cooler than the annual average of 51.3°F. Daily temperatures swing about 17°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 9h 17m. For travel, December is cold.
Avg High
37.7°F
Avg Low
20.7°F
Precipitation
1.47 in
Snow
12.4 in
December records in Fillmore
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 69.1°F (1995) | -2.0°F (1896) | 1.65 in (2007) |
| December 2 | 63.0°F (1941) | 1.0°F (1930) | 0.72 in (1973) |
| December 3 | 64.9°F (1998) | -4.0°F (1897) | 0.47 in (1999) |
| December 4 | 64.0°F (1901) | -7.1°F (1897) | 0.78 in (1966) |
| December 5 | 66.0°F (1946) | -9.0°F (1972) | 0.93 in (1951) |
| December 6 | 64.9°F (1901) | -8.0°F (1972) | 1.22 in (1966) |
| December 7 | 66.0°F (1939) | 0.0°F (1978) | 1.05 in (1901) |
| December 8 | 66.9°F (1939) | -5.1°F (1978) | 0.66 in (2003) |
| December 9 | 68.0°F (1939) | -13.0°F (1972) | 0.65 in (1931) |
| December 10 | 70.0°F (1939) | -18.9°F (1972) | 0.71 in (2021) |
| December 11 | 66.0°F (1929) | -14.1°F (1972) | 0.60 in (1907) |
| December 12 | 64.9°F (1929) | -17.0°F (1972) | 0.88 in (1937) |
| December 13 | 64.0°F (1893) | -18.9°F (1932) | 0.60 in (1899) |
| December 14 | 64.0°F (1946) | -13.0°F (1972) | 1.30 in (1922) |
| December 15 | 63.0°F (1929) | -14.1°F (1940) | 1.10 in (1897) |
| December 16 | 68.0°F (2025) | -7.1°F (1931) | 0.70 in (1895) |
| December 17 | 69.1°F (1939) | -2.9°F (1931) | 1.10 in (1908) |
| December 18 | 64.0°F (2025) | -4.0°F (1908) | 0.66 in (1992) |
| December 19 | 64.9°F (1917) | -11.9°F (1924) | 0.38 in (1951) |
| December 20 | 62.1°F (1941) | -9.9°F (1897) | 1.21 in (1920) |
| December 21 | 63.0°F (1904) | -14.1°F (1897) | 0.61 in (1920) |
| December 22 | 62.1°F (1894) | -14.1°F (1990) | 0.41 in (1924) |
| December 23 | 69.1°F (1964) | -18.9°F (1990) | 1.29 in (1987) |
| December 24 | 64.0°F (2024) | -18.0°F (1990) | 0.64 in (2012) |
| December 25 | 64.9°F (1900) | -18.0°F (1924) | 1.02 in (1959) |
| December 26 | 63.0°F (2025) | -20.0°F (1924) | 0.74 in (2003) |
| December 27 | 66.0°F (1896) | -17.0°F (1924) | 1.06 in (1983) |
| December 28 | 68.0°F (2025) | -11.9°F (1916) | 1.07 in (2006) |
| December 29 | 68.0°F (2025) | -8.0°F (1969) | 2.00 in (1972) |
| December 30 | 61.0°F (1921) | -13.0°F (1990) | 0.70 in (1923) |
| December 31 | 61.0°F (1996) | -7.1°F (1990) | 0.66 in (1951) |