December weather in Salmon, ID
The average temperature in Salmon in December is 20.9°F (12.9°F–28.9°F). Average precipitation: 0.73 inches. Average snowfall is 6.4 inches.
December is a winter month in Salmon, and is cooler than the annual average of 44.4°F. Daily temperatures swing about 16°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 8h 34m. For travel, December is cold.
Avg High
28.9°F
Avg Low
12.9°F
Precipitation
0.73 in
Snow
6.4 in
December records in Salmon
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 57.0°F (1995) | -5.1°F (2015) | 0.72 in (1975) |
| December 2 | 54.0°F (1972) | -4.0°F (2015) | 0.50 in (1977) |
| December 3 | 55.9°F (2021) | -7.1°F (1984) | 0.35 in (2010) |
| December 4 | 57.0°F (1979) | -13.0°F (1992) | 0.43 in (2007) |
| December 5 | 57.0°F (2021) | -18.0°F (1992) | 0.28 in (1971) |
| December 6 | 59.0°F (1987) | -11.0°F (1992) | 0.24 in (2003) |
| December 7 | 53.1°F (2023) | -11.0°F (1972) | 0.31 in (2010) |
| December 8 | 48.0°F (1979) | -18.0°F (1971) | 0.33 in (2015) |
| December 9 | 48.9°F (1996) | -20.9°F (1972) | 0.40 in (2025) |
| December 10 | 51.1°F (1979) | -22.0°F (1972) | 0.19 in (2025) |
| December 11 | 53.1°F (2004) | -15.0°F (1972) | 0.17 in (1970) |
| December 12 | 60.1°F (2025) | -6.0°F (2005) | 0.40 in (2016) |
| December 13 | 57.9°F (2025) | -8.0°F (1970) | 0.40 in (2010) |
| December 14 | 50.0°F (2025) | -11.9°F (1972) | 0.35 in (1974) |
| December 15 | 52.0°F (1979) | -15.0°F (1972) | 1.05 in (1977) |
| December 16 | 48.9°F (1982) | -11.9°F (1978) | 0.13 in (2006) |
| December 17 | 55.9°F (2025) | -9.9°F (2016) | 0.27 in (2000) |
| December 18 | 53.1°F (2025) | -14.1°F (2016) | 0.24 in (1999) |
| December 19 | 46.9°F (2024) | -9.9°F (1984) | 0.26 in (2025) |
| December 20 | 48.0°F (2025) | -17.0°F (1990) | 0.37 in (2010) |
| December 21 | 48.0°F (1974) | -26.0°F (1990) | 0.15 in (2013) |
| December 22 | 46.9°F (1972) | -31.0°F (1990) | 0.25 in (2015) |
| December 23 | 48.9°F (1972) | -29.0°F (1983) | 0.21 in (2006) |
| December 24 | 50.0°F (1978) | -27.9°F (1983) | 0.38 in (2007) |
| December 25 | 44.1°F (1979) | -11.0°F (1990) | 0.37 in (1980) |
| December 26 | 45.0°F (1980) | -8.0°F (2001) | 0.26 in (1968) |
| December 27 | 48.0°F (2025) | -9.0°F (1983) | 0.16 in (1992) |
| December 28 | 43.0°F (1968) | -20.0°F (1971) | 0.40 in (1998) |
| December 29 | 51.1°F (1996) | -22.0°F (1978) | 0.25 in (2004) |
| December 30 | 48.9°F (1996) | -27.0°F (1978) | 0.68 in (1983) |
| December 31 | 46.0°F (1996) | -27.0°F (1978) | 0.29 in (2019) |