January weather in Hamilton, MT
The average temperature in Hamilton in January is 27.0°F (18.9°F–35.1°F). Average precipitation: 0.96 inches.
January is a winter month in Hamilton, and is cooler than the annual average of 44.8°F. Daily temperatures swing about 16.2°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 8h 48m. For travel, January is cold.
Avg High
35.1°F
Avg Low
18.9°F
Precipitation
0.96 in
Daylight
8h 48m
January records in Hamilton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| January 1 | 62.1°F (1918) | -27.9°F (1979) | 0.56 in (1997) |
| January 2 | 57.0°F (1939) | -20.0°F (1978) | 0.54 in (2009) |
| January 3 | 57.0°F (1918) | -23.1°F (1910) | 0.46 in (1966) |
| January 4 | 57.9°F (1984) | -18.9°F (1942) | 0.27 in (2007) |
| January 5 | 55.0°F (2001) | -24.0°F (1942) | 0.70 in (1901) |
| January 6 | 61.0°F (1914) | -26.0°F (1979) | 0.46 in (2022) |
| January 7 | 55.0°F (1966) | -33.0°F (1937) | 0.83 in (1948) |
| January 8 | 55.0°F (1986) | -27.9°F (1937) | 0.80 in (1909) |
| January 9 | 57.9°F (1953) | -18.9°F (1937) | 0.57 in (1980) |
| January 10 | 57.9°F (1959) | -33.0°F (1909) | 0.42 in (2013) |
| January 11 | 60.1°F (1953) | -27.0°F (1963) | 0.52 in (1972) |
| January 12 | 57.9°F (1953) | -27.0°F (1916) | 0.31 in (2014) |
| January 13 | 59.0°F (1994) | -32.1°F (2024) | 0.58 in (1980) |
| January 14 | 61.0°F (1973) | -25.1°F (2024) | 0.54 in (1995) |
| January 15 | 61.0°F (1973) | -23.1°F (2024) | 1.09 in (1974) |
| January 16 | 55.9°F (1909) | -27.9°F (1916) | 0.40 in (1977) |
| January 17 | 57.0°F (1915) | -32.1°F (1930) | 0.51 in (1971) |
| January 18 | 59.0°F (1994) | -29.9°F (1916) | 0.32 in (1975) |
| January 19 | 62.1°F (1971) | -24.0°F (1916) | 0.58 in (2012) |
| January 20 | 57.9°F (1989) | -29.9°F (1937) | 0.40 in (1964) |
| January 21 | 55.9°F (1947) | -36.0°F (1937) | 0.70 in (1964) |
| January 22 | 57.0°F (1910) | -29.9°F (1930) | 0.55 in (1950) |
| January 23 | 57.9°F (1953) | -27.9°F (1930) | 0.40 in (1970) |
| January 24 | 57.9°F (1953) | -27.0°F (1930) | 0.55 in (1959) |
| January 25 | 57.0°F (2015) | -27.9°F (1957) | 0.43 in (2002) |
| January 26 | 64.9°F (2015) | -35.0°F (1957) | 0.64 in (1975) |
| January 27 | 61.0°F (1934) | -32.1°F (1957) | 0.47 in (1996) |
| January 28 | 61.0°F (1931) | -23.1°F (1916) | 0.27 in (1959) |
| January 29 | 60.1°F (2011) | -25.1°F (1916) | 0.24 in (1965) |
| January 30 | 63.0°F (1989) | -27.9°F (1937) | 0.27 in (2014) |
| January 31 | 62.1°F (2024) | -29.9°F (1937) | 0.40 in (1974) |