December weather in Big Sandy, MT
The average temperature in Big Sandy in December is 23.3°F (13.0°F–33.5°F). Average precipitation: 0.43 inches.
December is a winter month in Big Sandy, 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 2 days with precipitation. Daylight averages about 8h 9m. For travel, December is cold.
Avg High
33.5°F
Avg Low
13.0°F
Precipitation
0.43 in
Daylight
8h 9m
December records in Big Sandy
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 70.0°F (2021) | -31.0°F (1985) | 0.20 in (1950) |
| December 2 | 61.0°F (1941) | -35.0°F (1985) | 0.35 in (2025) |
| December 3 | 66.0°F (1939) | -20.0°F (1970) | 0.23 in (1964) |
| December 4 | 63.0°F (1939) | -29.0°F (1972) | 0.25 in (2021) |
| December 5 | 72.0°F (1939) | -34.1°F (1950) | 0.40 in (1932) |
| December 6 | 66.0°F (2003) | -32.1°F (1972) | 0.22 in (1936) |
| December 7 | 61.0°F (2023) | -38.0°F (1995) | 0.33 in (1958) |
| December 8 | 62.1°F (1939) | -35.0°F (1972) | 0.20 in (1929) |
| December 9 | 64.0°F (1979) | -29.9°F (1932) | 60.23 in (1929) |
| December 10 | 64.0°F (1939) | -29.9°F (1961) | 0.80 in (2000) |
| December 11 | 59.0°F (2004) | -35.0°F (1932) | 4.50 in (1933) |
| December 12 | 60.1°F (2014) | -32.1°F (1961) | 0.80 in (1932) |
| December 13 | 63.0°F (1998) | -32.1°F (1963) | 0.53 in (1951) |
| December 14 | 57.9°F (1997) | -27.9°F (1926) | 0.35 in (2009) |
| December 15 | 64.9°F (1962) | -27.0°F (1926) | 0.60 in (1929) |
| December 16 | 61.0°F (1980) | -31.0°F (1924) | 0.51 in (1951) |
| December 17 | 61.0°F (1976) | -36.0°F (1964) | 0.48 in (1963) |
| December 18 | 60.1°F (1976) | -41.1°F (1924) | 0.15 in (2010) |
| December 19 | 61.0°F (2004) | -35.0°F (1924) | 0.43 in (1960) |
| December 20 | 61.0°F (1941) | -32.1°F (1951) | 0.28 in (1964) |
| December 21 | 57.9°F (1974) | -29.9°F (1924) | 0.42 in (1966) |
| December 22 | 57.0°F (1936) | -29.9°F (1924) | 0.24 in (1926) |
| December 23 | 55.9°F (1954) | -41.1°F (1944) | 0.33 in (1993) |
| December 24 | 55.0°F (2003) | -50.1°F (1983) | 0.30 in (1968) |
| December 25 | 55.0°F (1956) | -38.9°F (1983) | 0.50 in (2017) |
| December 26 | 59.0°F (1980) | -33.0°F (1996) | 0.45 in (1998) |
| December 27 | 61.0°F (1980) | -34.1°F (1924) | 0.20 in (2014) |
| December 28 | 57.9°F (1956) | -32.1°F (1968) | 0.50 in (2010) |
| December 29 | 62.1°F (1956) | -45.0°F (1968) | 0.40 in (2017) |
| December 30 | 55.0°F (1962) | -45.0°F (1968) | 0.50 in (1987) |
| December 31 | 57.0°F (1963) | -45.0°F (1927) | 0.36 in (2004) |