December weather in Hamilton, MT
The average temperature in Hamilton in December is 25.7°F (17.9°F–33.5°F). Average precipitation: 1.33 inches.
December is a winter month in Hamilton, and is cooler than the annual average of 44.8°F. Daily temperatures swing about 15.6°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 8h 26m. For travel, December is cold.
Avg High
33.5°F
Avg Low
17.9°F
Precipitation
1.33 in
Daylight
8h 26m
December records in Hamilton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 60.1°F (2021) | -9.9°F (1931) | 0.53 in (1975) |
| December 2 | 66.0°F (2021) | -11.0°F (1931) | 0.66 in (1980) |
| December 3 | 62.1°F (1956) | -4.0°F (1931) | 0.53 in (1958) |
| December 4 | 60.1°F (1965) | -20.0°F (1972) | 0.66 in (2007) |
| December 5 | 60.1°F (2023) | -24.0°F (1972) | 0.30 in (1968) |
| December 6 | 62.1°F (1939) | -18.0°F (1972) | 0.62 in (1981) |
| December 7 | 57.0°F (1962) | -9.9°F (1972) | 0.31 in (1957) |
| December 8 | 59.0°F (1938) | -27.0°F (1972) | 0.73 in (2015) |
| December 9 | 66.0°F (1957) | -31.0°F (1972) | 0.51 in (1929) |
| December 10 | 63.0°F (1939) | -27.9°F (1972) | 0.74 in (1929) |
| December 11 | 60.1°F (1980) | -22.0°F (1932) | 0.78 in (1946) |
| December 12 | 66.0°F (1921) | -14.1°F (1932) | 0.54 in (1946) |
| December 13 | 64.0°F (1921) | -15.0°F (1932) | 0.40 in (1946) |
| December 14 | 57.0°F (1929) | -15.0°F (1932) | 0.49 in (1977) |
| December 15 | 64.0°F (1980) | -17.0°F (1932) | 0.59 in (1964) |
| December 16 | 62.1°F (1980) | -20.9°F (1964) | 0.50 in (1899) |
| December 17 | 62.1°F (1980) | -31.0°F (1964) | 0.27 in (1939) |
| December 18 | 60.1°F (2013) | -20.9°F (1964) | 0.22 in (1916) |
| December 19 | 57.0°F (1966) | -16.1°F (1998) | 0.31 in (2015) |
| December 20 | 57.0°F (1950) | -23.1°F (1990) | 0.45 in (1957) |
| December 21 | 57.0°F (1933) | -23.1°F (1983) | 0.82 in (1964) |
| December 22 | 57.0°F (1933) | -27.0°F (1983) | 1.58 in (1964) |
| December 23 | 54.0°F (1950) | -29.9°F (1983) | 1.20 in (1964) |
| December 24 | 55.9°F (1919) | -27.9°F (1983) | 0.62 in (1902) |
| December 25 | 55.9°F (2022) | -20.9°F (1944) | 0.72 in (1996) |
| December 26 | 60.1°F (1980) | -18.9°F (1951) | 0.44 in (1996) |
| December 27 | 61.0°F (1980) | -20.0°F (1916) | 0.55 in (1998) |
| December 28 | 53.1°F (1965) | -16.1°F (1983) | 0.40 in (2002) |
| December 29 | 62.1°F (1917) | -27.0°F (1990) | 0.73 in (1996) |
| December 30 | 59.0°F (1962) | -27.0°F (1978) | 0.37 in (2008) |
| December 31 | 57.9°F (1917) | -26.0°F (1978) | 0.68 in (1954) |