December weather in Lima, MT
The average temperature in Lima in December is 20.5°F (11.3°F–29.7°F). Average precipitation: 0.28 inches. Average snowfall is 5.7 inches.
December is a winter month in Lima, and is cooler than the annual average of 41.5°F. Daily temperatures swing about 18.4°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 8h 38m. For travel, December is cold.
Avg High
29.7°F
Avg Low
11.3°F
Precipitation
0.28 in
Snow
5.7 in
December records in Lima
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 64.9°F (1898) | -17.0°F (1985) | 0.60 in (1982) |
| December 2 | 51.1°F (1939) | -15.0°F (1919) | 0.10 in (1941) |
| December 3 | 51.1°F (1918) | -11.0°F (2009) | 0.25 in (1972) |
| December 4 | 53.1°F (2021) | -18.9°F (1992) | 0.50 in (1983) |
| December 5 | 57.9°F (1939) | -34.1°F (1972) | 3.00 in (2007) |
| December 6 | 55.9°F (1939) | -29.0°F (1972) | 0.25 in (1986) |
| December 7 | 55.0°F (1939) | -29.9°F (1972) | 0.18 in (1950) |
| December 8 | 54.0°F (1939) | -29.0°F (1972) | 3.00 in (2007) |
| December 9 | 53.1°F (1939) | -38.0°F (1919) | 0.30 in (1963) |
| December 10 | 55.0°F (1939) | -29.9°F (1932) | 0.32 in (1970) |
| December 11 | 55.0°F (2025) | -33.0°F (1932) | 0.12 in (1984) |
| December 12 | 55.0°F (2025) | -33.0°F (1919) | 0.23 in (1948) |
| December 13 | 55.0°F (1921) | -26.0°F (1919) | 0.20 in (1942) |
| December 14 | 50.0°F (2025) | -25.1°F (2008) | 0.23 in (1990) |
| December 15 | 52.0°F (1980) | -27.9°F (2008) | 0.17 in (1937) |
| December 16 | 54.0°F (2025) | -27.0°F (2008) | 0.10 in (1996) |
| December 17 | 48.9°F (2025) | -40.0°F (1964) | 0.09 in (1982) |
| December 18 | 52.0°F (1917) | -18.0°F (1983) | 0.20 in (1978) |
| December 19 | 52.0°F (1917) | -25.1°F (1990) | 0.25 in (2008) |
| December 20 | 66.0°F (1931) | -27.9°F (1990) | 0.33 in (1981) |
| December 21 | 48.9°F (1969) | -44.0°F (1990) | 0.32 in (1941) |
| December 22 | 53.1°F (1933) | -40.0°F (1983) | 0.21 in (1944) |
| December 23 | 51.1°F (1917) | -36.0°F (1983) | 0.35 in (1964) |
| December 24 | 48.9°F (2025) | -35.0°F (1983) | 0.22 in (2000) |
| December 25 | 50.0°F (1980) | -25.1°F (1944) | 0.34 in (1945) |
| December 26 | 46.9°F (1917) | -18.0°F (1944) | 0.50 in (1971) |
| December 27 | 51.1°F (1980) | -20.9°F (2014) | 0.21 in (1975) |
| December 28 | 48.0°F (1917) | -20.9°F (2014) | 2.00 in (1898) |
| December 29 | 53.1°F (1917) | -36.9°F (1978) | 0.20 in (1931) |
| December 30 | 53.1°F (2017) | -36.0°F (1978) | 0.19 in (1987) |
| December 31 | 46.9°F (1933) | -33.0°F (1978) | 0.20 in (1977) |