December weather in Fort Peck, MT
The average temperature in Fort Peck in December is 22.4°F (12.5°F–32.3°F). Average precipitation: 0.35 inches.
December is a winter month in Fort Peck, and is cooler than the annual average of 46.5°F. Daily temperatures swing about 19.8°F between overnight low and afternoon high. Expect about 5 days with precipitation. Daylight averages about 8h 11m. For travel, December is cold.
Avg High
32.3°F
Avg Low
12.5°F
Precipitation
0.35 in
Daylight
8h 11m
December records in Fort Peck
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 66.0°F (2021) | -16.1°F (1985) | 0.11 in (1995) |
| December 2 | 59.0°F (1988) | -25.1°F (1985) | 0.52 in (1982) |
| December 3 | 57.9°F (1989) | -24.0°F (1972) | 0.28 in (2013) |
| December 4 | 63.0°F (1979) | -31.0°F (1972) | 0.10 in (2023) |
| December 5 | 60.1°F (2012) | -29.0°F (1972) | 0.06 in (1966) |
| December 6 | 57.9°F (1987) | -34.1°F (1972) | 0.05 in (2022) |
| December 7 | 55.9°F (1987) | -35.0°F (2013) | 0.25 in (2003) |
| December 8 | 55.9°F (1990) | -35.0°F (1972) | 0.25 in (2012) |
| December 9 | 55.0°F (1957) | -34.1°F (1977) | 0.05 in (1978) |
| December 10 | 57.0°F (1987) | -25.1°F (1972) | 0.20 in (2016) |
| December 11 | 63.0°F (2004) | -22.0°F (2000) | 0.85 in (2025) |
| December 12 | 57.9°F (2004) | -18.9°F (1985) | 0.09 in (2016) |
| December 13 | 55.9°F (2017) | -26.0°F (1985) | 0.28 in (2008) |
| December 14 | 55.0°F (1997) | -20.9°F (2009) | 0.15 in (1982) |
| December 15 | 59.0°F (1980) | -25.1°F (2008) | 0.50 in (2015) |
| December 16 | 55.0°F (1980) | -24.0°F (1964) | 0.20 in (1977) |
| December 17 | 57.9°F (2001) | -27.9°F (2016) | 0.12 in (1985) |
| December 18 | 60.1°F (1979) | -26.0°F (1964) | 0.25 in (1990) |
| December 19 | 55.0°F (1979) | -23.1°F (1989) | 0.17 in (1988) |
| December 20 | 57.0°F (2004) | -20.0°F (1989) | 0.30 in (2017) |
| December 21 | 53.1°F (1962) | -33.0°F (1989) | 0.12 in (1999) |
| December 22 | 51.1°F (2023) | -38.0°F (1990) | 0.17 in (1964) |
| December 23 | 51.1°F (1963) | -32.1°F (2022) | 0.26 in (1973) |
| December 24 | 48.9°F (1999) | -36.0°F (1983) | 0.17 in (1982) |
| December 25 | 52.0°F (1963) | -34.1°F (1996) | 0.08 in (1960) |
| December 26 | 50.0°F (1972) | -22.0°F (1996) | 0.40 in (1988) |
| December 27 | 54.0°F (1980) | -22.0°F (2021) | 0.49 in (2003) |
| December 28 | 55.9°F (1999) | -24.0°F (2021) | 0.24 in (2008) |
| December 29 | 52.0°F (1999) | -32.1°F (1968) | 0.20 in (2010) |
| December 30 | 51.1°F (1956) | -26.0°F (1968) | 0.27 in (2004) |
| December 31 | 55.0°F (1963) | -26.0°F (1992) | 0.30 in (1993) |