January weather in Mullan, ID
The average temperature in Mullan in January is 28.8°F (22.5°F–35.1°F). Average precipitation: 4.14 inches.
January is a winter month in Mullan, and is cooler than the annual average of 45.1°F. Daily temperatures swing about 12.6°F between overnight low and afternoon high. Daylight averages about 8h 39m. For travel, January is cold.
Avg High
35.1°F
Avg Low
22.5°F
Precipitation
4.14 in
Daylight
8h 39m
January records in Mullan
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 46.0°F (1981) | -20.0°F (1979) | 1.11 in (2018) |
| January 2 | 44.1°F (1981) | 0.0°F (1978) | 1.24 in (2025) |
| January 3 | 45.0°F (2012) | -2.9°F (1979) | 0.51 in (1987) |
| January 4 | 51.1°F (1984) | -9.0°F (2017) | 1.14 in (2021) |
| January 5 | 55.9°F (2012) | -8.0°F (2017) | 1.87 in (1983) |
| January 6 | 44.1°F (2012) | -13.0°F (1982) | 0.48 in (1986) |
| January 7 | 42.1°F (1990) | -6.0°F (1993) | 1.12 in (2022) |
| January 8 | 46.9°F (1983) | -9.0°F (1993) | 0.91 in (1990) |
| January 9 | 43.0°F (1981) | 3.9°F (1980) | 0.68 in (1990) |
| January 10 | 48.0°F (2012) | 6.1°F (1993) | 0.53 in (2024) |
| January 11 | 48.0°F (1983) | 1.0°F (1993) | 1.30 in (1976) |
| January 12 | 50.0°F (1983) | -7.1°F (2024) | 1.49 in (1980) |
| January 13 | 46.0°F (1986) | -23.1°F (2024) | 2.53 in (2021) |
| January 14 | 45.0°F (1983) | -15.0°F (2024) | 0.91 in (1980) |
| January 15 | 44.1°F (1983) | -18.0°F (2024) | 1.00 in (1988) |
| January 16 | 44.1°F (1986) | -13.0°F (2024) | 0.50 in (1989) |
| January 17 | 46.0°F (1976) | 0.0°F (1984) | 0.62 in (1982) |
| January 18 | 48.9°F (1986) | -4.0°F (1984) | 0.50 in (2018) |
| January 19 | 50.0°F (1986) | -5.1°F (1984) | 0.83 in (2012) |
| January 20 | 52.0°F (1981) | -2.0°F (1984) | 0.51 in (1993) |
| January 21 | 48.0°F (1981) | 1.9°F (2025) | 0.68 in (1979) |
| January 22 | 53.1°F (1981) | 8.1°F (1991) | 0.48 in (1990) |
| January 23 | 50.0°F (1994) | 5.0°F (1979) | 1.06 in (1982) |
| January 24 | 46.9°F (1994) | 5.0°F (2025) | 1.14 in (1982) |
| January 25 | 44.1°F (1992) | -0.9°F (1979) | 1.31 in (1984) |
| January 26 | 45.0°F (1993) | 1.9°F (1980) | 0.46 in (1990) |
| January 27 | 45.0°F (1984) | -4.0°F (1980) | 0.44 in (1983) |
| January 28 | 48.9°F (1976) | -2.9°F (1980) | 0.76 in (1992) |
| January 29 | 53.1°F (2018) | -6.0°F (1991) | 0.85 in (1990) |
| January 30 | 51.1°F (2024) | -7.1°F (1980) | 0.44 in (1986) |
| January 31 | 50.0°F (2026) | -5.1°F (1985) | 0.75 in (1982) |