December weather in Colstrip, MT
The average temperature in Colstrip in December is 26.0°F (15.3°F–36.6°F). Average precipitation: 0.56 inches. Average snowfall is 6.2 inches.
December is a winter month in Colstrip, and is cooler than the annual average of 46.1°F. Daily temperatures swing about 21.3°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 8h 29m. For travel, December is cold.
Avg High
36.6°F
Avg Low
15.3°F
Precipitation
0.56 in
Snow
6.2 in
December records in Colstrip
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 66.9°F (1995) | -9.0°F (2014) | 0.33 in (1929) |
| December 2 | 66.9°F (1959) | -27.9°F (1985) | 0.35 in (1947) |
| December 3 | 66.9°F (1939) | -9.9°F (1985) | 0.23 in (2008) |
| December 4 | 64.0°F (1939) | -25.1°F (1928) | 0.73 in (2013) |
| December 5 | 73.9°F (1939) | -25.1°F (1950) | 0.18 in (1932) |
| December 6 | 70.0°F (1939) | -27.9°F (1972) | 0.28 in (1936) |
| December 7 | 64.0°F (1940) | -25.1°F (1927) | 0.58 in (1958) |
| December 8 | 64.0°F (1939) | -31.0°F (1972) | 0.30 in (1950) |
| December 9 | 71.1°F (1957) | -27.0°F (1932) | 0.45 in (2025) |
| December 10 | 64.9°F (1990) | -25.1°F (1927) | 0.94 in (2025) |
| December 11 | 64.0°F (1980) | -29.9°F (1932) | 0.39 in (2025) |
| December 12 | 62.1°F (2004) | -18.0°F (1932) | 0.87 in (2025) |
| December 13 | 64.0°F (1960) | -20.9°F (1985) | 0.33 in (1946) |
| December 14 | 64.9°F (1997) | -20.0°F (1963) | 1.01 in (2022) |
| December 15 | 64.9°F (1980) | -29.9°F (1945) | 0.29 in (2015) |
| December 16 | 68.0°F (1980) | -29.9°F (1964) | 0.47 in (2016) |
| December 17 | 64.9°F (1980) | -35.0°F (1964) | 0.23 in (1967) |
| December 18 | 62.1°F (1988) | -25.1°F (1955) | 0.42 in (1973) |
| December 19 | 59.0°F (1954) | -22.0°F (1990) | 1.09 in (2025) |
| December 20 | 61.0°F (1941) | -32.1°F (1989) | 0.50 in (2015) |
| December 21 | 60.1°F (2024) | -36.0°F (1989) | 0.55 in (2021) |
| December 22 | 59.0°F (1936) | -25.1°F (1960) | 0.31 in (1962) |
| December 23 | 59.0°F (2020) | -41.1°F (2002) | 0.36 in (1937) |
| December 24 | 57.9°F (1950) | -38.9°F (2002) | 0.42 in (1935) |
| December 25 | 55.0°F (1947) | -25.1°F (1996) | 0.52 in (1941) |
| December 26 | 59.0°F (1947) | -22.0°F (1933) | 0.46 in (1969) |
| December 27 | 62.1°F (1980) | -27.0°F (1983) | 0.78 in (1934) |
| December 28 | 57.0°F (1947) | -27.0°F (1990) | 0.14 in (1928) |
| December 29 | 62.1°F (1956) | -26.0°F (1946) | 0.37 in (1997) |
| December 30 | 60.1°F (1980) | -26.0°F (1968) | 0.33 in (1972) |
| December 31 | 59.0°F (1980) | -29.9°F (1927) | 0.21 in (1940) |