December weather in Rivergrove, OR
The average temperature in Rivergrove in December is 40.7°F (33.9°F–47.5°F). Average precipitation: inches.
December is a winter month in Rivergrove, and is cooler than the annual average of 53.7°F. Daily temperatures swing about 13.6°F between overnight low and afternoon high. Daylight averages about 8h 33m. For travel, December is cool.
Avg High
47.5°F
Avg Low
33.9°F
Precipitation
in
Daylight
8h 33m
December records in Rivergrove
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 57.0°F (1993) | 19.9°F (1985) | 1.81 in (1994) |
| December 2 | 57.0°F (1981) | 18.0°F (1985) | 1.47 in (1979) |
| December 3 | 59.0°F (1975) | 23.0°F (1976) | 1.87 in (1987) |
| December 4 | 60.1°F (1979) | 26.1°F (1988) | 1.55 in (1975) |
| December 5 | 55.0°F (1979) | 21.9°F (1972) | 1.31 in (1989) |
| December 6 | 60.1°F (1988) | 19.0°F (1972) | 1.80 in (1981) |
| December 7 | 55.0°F (1987) | 12.9°F (2005) | 1.10 in (1996) |
| December 8 | 55.9°F (1974) | 16.0°F (1972) | 1.10 in (1996) |
| December 9 | 63.0°F (1993) | 3.0°F (1972) | 1.87 in (1992) |
| December 10 | 64.0°F (1993) | 3.9°F (1972) | 1.37 in (1987) |
| December 11 | 57.9°F (1987) | 15.1°F (1972) | 1.66 in (1995) |
| December 12 | 61.0°F (1995) | 7.0°F (1972) | 0.90 in (1973) |
| December 13 | 55.0°F (1977) | 6.1°F (2005) | 2.22 in (1977) |
| December 14 | 60.1°F (1977) | 7.0°F (1972) | 1.84 in (2003) |
| December 15 | 57.0°F (1977) | 24.1°F (1972) | 1.34 in (1981) |
| December 16 | 59.0°F (1980) | 24.1°F (1972) | 2.22 in (1982) |
| December 17 | 62.1°F (1980) | 25.0°F (2006) | 1.00 in (1997) |
| December 18 | 57.0°F (2004) | 23.0°F (1988) | 1.05 in (1972) |
| December 19 | 61.0°F (1994) | 15.1°F (1984) | 0.67 in (1972) |
| December 20 | 59.0°F (1972) | 10.9°F (1990) | 1.23 in (1982) |
| December 21 | 59.0°F (1972) | 10.0°F (1990) | 1.76 in (1972) |
| December 22 | 55.9°F (1972) | 10.0°F (1990) | 0.85 in (2000) |
| December 23 | 57.9°F (1999) | 12.0°F (1983) | 2.20 in (2002) |
| December 24 | 54.0°F (1975) | 0.0°F (1983) | 0.87 in (2006) |
| December 25 | 59.0°F (1980) | 12.0°F (1990) | 1.83 in (1980) |
| December 26 | 62.1°F (1980) | 17.1°F (1983) | 0.75 in (1980) |
| December 27 | 60.1°F (1980) | 23.0°F (1990) | 1.43 in (1974) |
| December 28 | 60.1°F (1980) | 18.0°F (1978) | 2.54 in (1998) |
| December 29 | 55.9°F (1980) | 12.0°F (1990) | 1.36 in (1986) |
| December 30 | 57.0°F (1995) | 12.0°F (1990) | 1.40 in (1983) |
| December 31 | 64.0°F (1980) | 12.9°F (1978) | 1.43 in (2002) |