December weather in Sisters, OR
The average temperature in Sisters in December is 29.6°F (19.8°F–39.3°F). Average precipitation: 2.53 inches.
December is a winter month in Sisters, and is cooler than the annual average of 45.5°F. Daily temperatures swing about 19.5°F between overnight low and afternoon high. Daylight averages about 8h 41m. For travel, December is cold.
Avg High
39.3°F
Avg Low
19.8°F
Precipitation
2.53 in
Daylight
8h 41m
December records in Sisters
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 66.0°F (2021) | -5.1°F (2015) | 0.55 in (1964) |
| December 2 | 64.0°F (1958) | -7.1°F (2019) | 1.41 in (1987) |
| December 3 | 61.0°F (1958) | -4.0°F (1992) | 0.62 in (2007) |
| December 4 | 59.0°F (1965) | -2.0°F (2013) | 1.70 in (1968) |
| December 5 | 62.1°F (1989) | -16.1°F (1972) | 1.56 in (1996) |
| December 6 | 60.1°F (1959) | -5.1°F (2013) | 0.55 in (1983) |
| December 7 | 57.9°F (1962) | -22.0°F (2013) | 3.40 in (2005) |
| December 8 | 57.0°F (1975) | -27.9°F (2013) | 1.07 in (2004) |
| December 9 | 61.0°F (2015) | -25.1°F (1972) | 0.75 in (1996) |
| December 10 | 61.0°F (1958) | -27.9°F (1972) | 1.36 in (1987) |
| December 11 | 61.0°F (1958) | -18.9°F (1972) | 0.38 in (1977) |
| December 12 | 55.9°F (1988) | -4.0°F (2009) | 0.87 in (2006) |
| December 13 | 63.0°F (1988) | -14.1°F (1972) | 0.91 in (1977) |
| December 14 | 60.1°F (1962) | -13.0°F (1972) | 0.48 in (1964) |
| December 15 | 60.1°F (1959) | -6.0°F (1967) | 1.26 in (1981) |
| December 16 | 57.9°F (1980) | -8.0°F (1964) | 0.42 in (1977) |
| December 17 | 59.0°F (1979) | -16.1°F (1964) | 0.90 in (2015) |
| December 18 | 57.9°F (1980) | -8.0°F (1964) | 0.64 in (1960) |
| December 19 | 53.1°F (2004) | -2.0°F (1978) | 0.85 in (2005) |
| December 20 | 54.0°F (1974) | -20.0°F (1990) | 0.90 in (1964) |
| December 21 | 55.9°F (1972) | -27.9°F (1990) | 1.98 in (1964) |
| December 22 | 57.0°F (1964) | -20.9°F (1983) | 2.80 in (1964) |
| December 23 | 55.9°F (1967) | -20.9°F (1983) | 1.35 in (1964) |
| December 24 | 55.0°F (1989) | -5.1°F (1990) | 1.50 in (1964) |
| December 25 | 55.9°F (1975) | -2.0°F (1990) | 0.61 in (2007) |
| December 26 | 59.0°F (1972) | -9.9°F (1988) | 0.36 in (1964) |
| December 27 | 64.0°F (1980) | -9.9°F (1983) | 0.66 in (2005) |
| December 28 | 55.0°F (2013) | -2.0°F (2015) | 2.10 in (1998) |
| December 29 | 57.0°F (1962) | -20.0°F (1990) | 1.30 in (1980) |
| December 30 | 60.1°F (1997) | -11.9°F (1990) | 1.46 in (2003) |
| December 31 | 59.0°F (1958) | -9.0°F (2014) | 0.71 in (1992) |