December weather in Rupert, ID
The average temperature in Rupert in December is 26.6°F (19.4°F–33.7°F). Average precipitation: 1.24 inches.
December is a winter month in Rupert, and is cooler than the annual average of 47°F. Daily temperatures swing about 14.3°F between overnight low and afternoon high. Expect about 11 days with precipitation. Daylight averages about 8h 53m. For travel, December is cold.
Avg High
33.7°F
Avg Low
19.4°F
Precipitation
1.24 in
Daylight
8h 53m
December records in Rupert
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 64.9°F (1995) | -4.0°F (2015) | 0.75 in (2012) |
| December 2 | 57.9°F (1939) | -2.9°F (2015) | 0.38 in (1952) |
| December 3 | 60.1°F (1939) | 1.0°F (1992) | 0.49 in (1938) |
| December 4 | 61.0°F (1956) | -4.0°F (1992) | 0.74 in (1950) |
| December 5 | 68.0°F (1939) | -6.0°F (1992) | 0.72 in (2012) |
| December 6 | 59.0°F (1939) | -8.0°F (2005) | 0.49 in (1946) |
| December 7 | 61.0°F (1939) | -7.1°F (2005) | 0.26 in (1950) |
| December 8 | 61.0°F (1939) | -4.0°F (2005) | 0.77 in (1992) |
| December 9 | 59.0°F (1939) | -16.1°F (1972) | 0.30 in (1955) |
| December 10 | 64.9°F (1939) | -18.9°F (1972) | 0.60 in (1948) |
| December 11 | 59.0°F (1987) | -20.9°F (1972) | 0.71 in (1948) |
| December 12 | 55.0°F (1995) | -20.0°F (1972) | 0.63 in (1999) |
| December 13 | 60.1°F (2014) | -9.9°F (1967) | 0.36 in (2006) |
| December 14 | 60.1°F (2014) | -11.0°F (1972) | 0.25 in (1965) |
| December 15 | 55.0°F (1939) | -11.0°F (1972) | 0.46 in (1981) |
| December 16 | 64.0°F (1939) | -7.1°F (1945) | 0.32 in (1982) |
| December 17 | 57.0°F (1962) | -4.0°F (1964) | 0.22 in (1955) |
| December 18 | 57.9°F (1962) | -9.9°F (1945) | 0.24 in (1977) |
| December 19 | 59.0°F (1941) | -7.1°F (1945) | 0.35 in (2010) |
| December 20 | 57.9°F (1979) | -4.0°F (1990) | 0.48 in (1996) |
| December 21 | 55.0°F (1961) | -11.9°F (1990) | 0.64 in (1981) |
| December 22 | 55.9°F (1969) | -22.0°F (1990) | 0.57 in (2015) |
| December 23 | 57.9°F (1964) | -25.1°F (1990) | 1.50 in (1964) |
| December 24 | 55.9°F (1955) | -20.0°F (1990) | 1.10 in (1964) |
| December 25 | 51.1°F (1950) | -11.0°F (1990) | 0.50 in (1955) |
| December 26 | 54.0°F (1955) | -8.0°F (1941) | 0.94 in (1996) |
| December 27 | 60.1°F (1976) | -8.0°F (1988) | 0.40 in (1981) |
| December 28 | 60.1°F (1980) | -8.0°F (1988) | 0.38 in (1973) |
| December 29 | 51.1°F (1980) | -2.9°F (1990) | 0.54 in (1992) |
| December 30 | 59.0°F (1962) | -23.1°F (1990) | 1.05 in (2005) |
| December 31 | 55.9°F (1962) | -18.0°F (1990) | 0.38 in (1954) |