December weather in Circle, MT
The average temperature in Circle in December is 21.3°F (11.0°F–31.5°F). Average precipitation: 0.46 inches.
December is a winter month in Circle, and is cooler than the annual average of 45.1°F. Daily temperatures swing about 20.5°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 8h 16m. For travel, December is cold.
Avg High
31.5°F
Avg Low
11.0°F
Precipitation
0.46 in
Daylight
8h 16m
December records in Circle
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 68.0°F (2021) | -16.1°F (1985) | 0.31 in (2018) |
| December 2 | 60.1°F (1988) | -29.9°F (1985) | 0.66 in (1982) |
| December 3 | 57.9°F (1988) | -25.1°F (1985) | 0.41 in (2010) |
| December 4 | 62.1°F (1987) | -22.0°F (1972) | 0.17 in (1978) |
| December 5 | 66.9°F (1979) | -33.0°F (1994) | 0.10 in (1979) |
| December 6 | 64.0°F (2023) | -32.1°F (1972) | 0.11 in (2022) |
| December 7 | 55.9°F (1987) | -31.0°F (2013) | 0.24 in (1971) |
| December 8 | 55.9°F (1990) | -33.0°F (1972) | 0.20 in (2012) |
| December 9 | 59.0°F (2015) | -41.1°F (1977) | 0.08 in (2024) |
| December 10 | 57.9°F (1979) | -38.0°F (1977) | 0.11 in (2025) |
| December 11 | 61.0°F (2004) | -23.1°F (2000) | 0.64 in (2025) |
| December 12 | 59.0°F (2014) | -20.9°F (2000) | 0.53 in (1968) |
| December 13 | 54.0°F (1997) | -23.1°F (1985) | 0.30 in (2009) |
| December 14 | 61.0°F (1997) | -32.1°F (1963) | 0.24 in (1982) |
| December 15 | 55.0°F (1997) | -36.0°F (1989) | 0.51 in (2010) |
| December 16 | 61.0°F (1980) | -27.0°F (1964) | 0.09 in (1999) |
| December 17 | 60.1°F (1980) | -27.9°F (2016) | 0.23 in (1967) |
| December 18 | 55.0°F (1988) | -31.0°F (1963) | 0.19 in (2022) |
| December 19 | 61.0°F (1979) | -27.9°F (1989) | 0.14 in (2013) |
| December 20 | 57.0°F (1979) | -25.1°F (1989) | 0.52 in (2004) |
| December 21 | 54.0°F (2023) | -45.9°F (1989) | 0.32 in (2009) |
| December 22 | 54.0°F (2023) | -43.1°F (1989) | 0.27 in (1969) |
| December 23 | 48.9°F (1963) | -35.0°F (2013) | 0.28 in (1973) |
| December 24 | 51.1°F (1999) | -36.0°F (1983) | 0.47 in (2013) |
| December 25 | 50.0°F (1963) | -31.0°F (1996) | 0.13 in (1973) |
| December 26 | 52.0°F (2025) | -27.0°F (2017) | 0.40 in (1988) |
| December 27 | 48.9°F (2005) | -24.0°F (2017) | 0.76 in (2003) |
| December 28 | 57.0°F (1980) | -24.0°F (2021) | 0.90 in (2003) |
| December 29 | 52.0°F (1980) | -33.0°F (1968) | 0.86 in (2005) |
| December 30 | 52.0°F (2004) | -32.1°F (1968) | 0.23 in (1972) |
| December 31 | 55.0°F (1963) | -36.0°F (1992) | 0.21 in (1993) |