December weather in Spencer, ID
The average temperature in Spencer in December is 22.6°F (15.6°F–29.7°F). Average precipitation: 0.99 inches. Average snowfall is 13.7 inches.
December is a winter month in Spencer, and is cooler than the annual average of 45.3°F. Daily temperatures swing about 14.1°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 8h 40m. For travel, December is cold.
Avg High
29.7°F
Avg Low
15.6°F
Precipitation
0.99 in
Snow
13.7 in
December records in Spencer
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 53.1°F (1995) | -4.0°F (1985) | 0.23 in (1925) |
| December 2 | 48.9°F (1926) | -6.0°F (1928) | 0.80 in (2010) |
| December 3 | 51.1°F (1929) | -5.1°F (1928) | 0.78 in (1966) |
| December 4 | 50.0°F (1929) | -9.0°F (1928) | 0.37 in (1998) |
| December 5 | 54.0°F (1939) | -9.9°F (1972) | 0.70 in (1966) |
| December 6 | 48.9°F (2023) | -9.9°F (1972) | 0.38 in (1946) |
| December 7 | 50.0°F (1939) | -11.9°F (1927) | 0.29 in (1952) |
| December 8 | 48.0°F (1965) | -17.0°F (1978) | 0.35 in (1992) |
| December 9 | 51.1°F (1939) | -18.0°F (1972) | 0.40 in (1970) |
| December 10 | 52.0°F (1939) | -24.0°F (1972) | 0.28 in (1937) |
| December 11 | 51.1°F (2014) | -18.0°F (1961) | 0.56 in (1935) |
| December 12 | 51.1°F (2014) | -14.1°F (1932) | 0.76 in (1995) |
| December 13 | 51.1°F (1929) | -14.1°F (1932) | 0.42 in (2021) |
| December 14 | 51.1°F (1929) | -18.0°F (1926) | 0.43 in (2021) |
| December 15 | 50.0°F (1929) | -13.0°F (1926) | 0.39 in (1977) |
| December 16 | 53.1°F (1939) | -9.0°F (1964) | 0.34 in (2009) |
| December 17 | 52.0°F (2025) | -25.1°F (1964) | 0.21 in (1949) |
| December 18 | 46.0°F (1962) | -9.9°F (1964) | 0.37 in (1977) |
| December 19 | 48.0°F (2003) | -11.9°F (1928) | 0.25 in (1957) |
| December 20 | 46.0°F (2023) | -18.0°F (1990) | 0.35 in (1952) |
| December 21 | 45.0°F (1941) | -25.1°F (1990) | 0.61 in (1988) |
| December 22 | 45.0°F (2023) | -31.0°F (1990) | 0.36 in (1973) |
| December 23 | 48.0°F (1955) | -27.9°F (1990) | 0.76 in (1982) |
| December 24 | 48.0°F (2025) | -18.9°F (1983) | 1.00 in (1955) |
| December 25 | 50.0°F (2025) | -11.9°F (1990) | 1.24 in (1959) |
| December 26 | 45.0°F (2025) | -9.9°F (1926) | 0.30 in (2005) |
| December 27 | 53.1°F (1955) | -11.9°F (2015) | 0.45 in (1931) |
| December 28 | 51.1°F (1925) | -7.1°F (1954) | 0.46 in (2005) |
| December 29 | 45.0°F (2011) | -20.0°F (1990) | 0.39 in (2010) |
| December 30 | 46.9°F (2023) | -24.0°F (1978) | 0.41 in (1933) |
| December 31 | 48.9°F (1980) | -24.0°F (1978) | 0.82 in (2005) |