December weather in Chelan, WA
The average temperature in Chelan in December is 28.7°F (22.6°F–34.9°F). Average precipitation: 1.83 inches. Average snowfall is 8.7 inches.
December is a winter month in Chelan, and is cooler than the annual average of 50.1°F. Daily temperatures swing about 12.3°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 8h 12m. For travel, December is cold.
Avg High
34.9°F
Avg Low
22.6°F
Precipitation
1.83 in
Snow
8.7 in
December records in Chelan
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 66.9°F (2021) | 0.0°F (1985) | 0.89 in (1987) |
| December 2 | 69.1°F (2021) | 3.9°F (1985) | 0.55 in (2012) |
| December 3 | 59.0°F (1975) | 5.0°F (2022) | 1.06 in (2007) |
| December 4 | 55.9°F (1975) | 9.0°F (2022) | 0.56 in (1974) |
| December 5 | 54.0°F (2007) | 10.9°F (1994) | 0.32 in (2003) |
| December 6 | 54.0°F (2007) | 10.9°F (2009) | 1.01 in (2015) |
| December 7 | 55.0°F (1979) | 7.0°F (1972) | 0.58 in (1985) |
| December 8 | 50.0°F (1981) | 0.0°F (1972) | 0.73 in (2004) |
| December 9 | 50.0°F (1991) | 1.0°F (1972) | 0.93 in (1971) |
| December 10 | 53.1°F (1979) | 8.1°F (1972) | 1.32 in (1987) |
| December 11 | 64.9°F (2025) | 9.0°F (1995) | 1.05 in (2010) |
| December 12 | 52.0°F (2025) | 10.9°F (1972) | 0.60 in (1969) |
| December 13 | 51.1°F (1988) | 10.0°F (1972) | 0.56 in (1973) |
| December 14 | 57.0°F (1979) | 9.0°F (2016) | 0.61 in (2021) |
| December 15 | 57.9°F (1979) | 9.0°F (2016) | 1.42 in (2006) |
| December 16 | 57.9°F (1999) | -9.9°F (1964) | 0.73 in (1970) |
| December 17 | 57.0°F (2025) | -9.0°F (1964) | 0.90 in (2012) |
| December 18 | 48.9°F (1998) | -8.0°F (1964) | 1.04 in (2024) |
| December 19 | 52.0°F (1999) | -0.9°F (2022) | 0.67 in (1981) |
| December 20 | 52.0°F (1999) | -0.9°F (2022) | 0.80 in (2001) |
| December 21 | 54.0°F (2020) | -7.1°F (2022) | 0.76 in (2014) |
| December 22 | 53.1°F (1972) | -11.9°F (2022) | 0.61 in (1964) |
| December 23 | 48.0°F (1978) | -11.0°F (2022) | 0.51 in (1969) |
| December 24 | 48.0°F (1978) | -6.0°F (1983) | 1.02 in (1988) |
| December 25 | 48.0°F (1961) | 0.0°F (1983) | 0.55 in (1973) |
| December 26 | 45.0°F (1972) | 6.1°F (2021) | 1.12 in (2012) |
| December 27 | 54.0°F (1980) | 7.0°F (1971) | 0.62 in (2022) |
| December 28 | 55.9°F (1980) | -4.0°F (1968) | 1.12 in (1998) |
| December 29 | 52.0°F (2011) | -14.1°F (1968) | 0.55 in (1996) |
| December 30 | 57.0°F (1998) | -18.0°F (1968) | 0.46 in (2022) |
| December 31 | 48.9°F (1998) | -17.0°F (1968) | 1.50 in (1996) |