December weather in Mullan, ID
The average temperature in Mullan in December is 27.2°F (22.1°F–32.2°F). Average precipitation: 3.80 inches.
December is a winter month in Mullan, and is cooler than the annual average of 45.1°F. Daily temperatures swing about 10.1°F between overnight low and afternoon high. Daylight averages about 8h 16m. For travel, December is cold.
Avg High
32.2°F
Avg Low
22.1°F
Precipitation
3.80 in
Daylight
8h 16m
December records in Mullan
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 57.0°F (2021) | -0.9°F (1985) | 2.35 in (2014) |
| December 2 | 54.0°F (2021) | 1.0°F (1985) | 1.58 in (1979) |
| December 3 | 50.0°F (2021) | 1.9°F (2022) | 1.14 in (1982) |
| December 4 | 51.1°F (1979) | 1.0°F (1994) | 1.44 in (1982) |
| December 5 | 45.0°F (1987) | 3.0°F (2013) | 1.15 in (1981) |
| December 6 | 46.9°F (2023) | -9.0°F (2013) | 1.20 in (1977) |
| December 7 | 44.1°F (1987) | -5.1°F (1978) | 0.48 in (1987) |
| December 8 | 50.0°F (1979) | 3.9°F (1980) | 2.05 in (2025) |
| December 9 | 50.0°F (1979) | 5.0°F (1980) | 2.45 in (2015) |
| December 10 | 53.1°F (2025) | 9.0°F (2013) | 1.57 in (1987) |
| December 11 | 48.0°F (1993) | 0.0°F (1985) | 0.95 in (1978) |
| December 12 | 46.9°F (2025) | 8.1°F (1978) | 1.46 in (2016) |
| December 13 | 46.9°F (1988) | -2.0°F (2016) | 1.38 in (2021) |
| December 14 | 48.9°F (1980) | 10.9°F (1978) | 0.94 in (2022) |
| December 15 | 53.1°F (2025) | 10.9°F (1988) | 0.86 in (1979) |
| December 16 | 45.0°F (1976) | -11.0°F (2016) | 1.02 in (1982) |
| December 17 | 48.0°F (2013) | -0.9°F (2016) | 1.62 in (2025) |
| December 18 | 55.0°F (2025) | 6.1°F (1983) | 0.54 in (2024) |
| December 19 | 48.0°F (2011) | -7.1°F (1990) | 1.22 in (2025) |
| December 20 | 46.0°F (2018) | -11.0°F (1990) | 1.16 in (2021) |
| December 21 | 46.9°F (2024) | -13.0°F (1990) | 1.20 in (2020) |
| December 22 | 42.1°F (1980) | -18.0°F (1990) | 0.74 in (1980) |
| December 23 | 42.1°F (2024) | -17.0°F (1983) | 0.86 in (1984) |
| December 24 | 41.0°F (1989) | -11.9°F (1983) | 0.62 in (2021) |
| December 25 | 43.0°F (2025) | -2.9°F (1983) | 1.05 in (1980) |
| December 26 | 52.0°F (1980) | -2.9°F (1988) | 0.79 in (1980) |
| December 27 | 52.0°F (1980) | 3.9°F (2025) | 1.51 in (2022) |
| December 28 | 43.0°F (1980) | -4.0°F (1990) | 1.01 in (2022) |
| December 29 | 45.0°F (2023) | -18.9°F (1990) | 0.81 in (1984) |
| December 30 | 43.0°F (1980) | -20.0°F (1978) | 1.54 in (1984) |
| December 31 | 48.0°F (1980) | -20.9°F (1978) | 1.07 in (2018) |