December weather in Leavenworth, WA
The average temperature in Leavenworth in December is 26.8°F (20.0°F–33.6°F). Average precipitation: 4.52 inches. Average snowfall is 32.4 inches.
December is a winter month in Leavenworth, and is cooler than the annual average of 47.3°F. Daily temperatures swing about 13.6°F between overnight low and afternoon high. Expect about 14 days with precipitation. Daylight averages about 8h 15m. For travel, December is cold.
Avg High
33.6°F
Avg Low
20.0°F
Precipitation
4.52 in
Snow
32.4 in
December records in Leavenworth
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 66.0°F (2021) | -5.1°F (1985) | 1.15 in (1966) |
| December 2 | 57.9°F (1932) | -2.9°F (1985) | 1.67 in (1979) |
| December 3 | 53.1°F (2016) | -2.9°F (1919) | 2.25 in (2007) |
| December 4 | 55.9°F (1932) | -0.9°F (1919) | 1.21 in (1982) |
| December 5 | 54.0°F (1925) | -0.9°F (1919) | 1.75 in (2015) |
| December 6 | 48.9°F (2025) | -8.0°F (1956) | 2.21 in (1987) |
| December 7 | 50.0°F (1938) | -9.0°F (2013) | 2.10 in (1923) |
| December 8 | 53.1°F (1938) | -9.9°F (1972) | 2.58 in (2015) |
| December 9 | 51.1°F (1917) | -2.9°F (1972) | 2.69 in (1933) |
| December 10 | 69.1°F (2025) | -14.1°F (1927) | 2.36 in (1987) |
| December 11 | 52.0°F (2012) | -18.9°F (1922) | 1.91 in (1955) |
| December 12 | 57.9°F (1924) | -18.0°F (1919) | 1.35 in (2010) |
| December 13 | 54.0°F (1924) | -17.0°F (1919) | 1.00 in (1917) |
| December 14 | 55.9°F (1924) | -11.9°F (1922) | 2.70 in (1999) |
| December 15 | 55.9°F (1936) | -18.0°F (1922) | 1.79 in (1959) |
| December 16 | 52.0°F (1917) | -15.0°F (1922) | 2.20 in (2025) |
| December 17 | 55.0°F (1998) | -22.0°F (1964) | 1.65 in (1961) |
| December 18 | 59.0°F (1936) | -18.0°F (1964) | 2.66 in (1917) |
| December 19 | 54.0°F (1936) | -6.0°F (1924) | 1.90 in (1936) |
| December 20 | 51.1°F (1939) | -6.0°F (1924) | 2.26 in (1933) |
| December 21 | 55.0°F (1962) | -18.0°F (1983) | 2.20 in (1915) |
| December 22 | 48.0°F (1917) | -23.1°F (1983) | 1.75 in (1964) |
| December 23 | 52.0°F (1992) | -25.1°F (1983) | 0.83 in (1969) |
| December 24 | 53.1°F (1938) | -25.1°F (1983) | 1.10 in (1922) |
| December 25 | 54.0°F (1938) | -24.0°F (1983) | 1.27 in (1923) |
| December 26 | 51.1°F (1953) | -9.0°F (1948) | 1.45 in (1998) |
| December 27 | 60.1°F (1967) | -11.0°F (1948) | 2.74 in (1937) |
| December 28 | 54.0°F (1967) | -2.9°F (1916) | 1.87 in (1998) |
| December 29 | 51.1°F (1932) | -22.0°F (1968) | 1.41 in (1945) |
| December 30 | 62.1°F (1938) | -36.0°F (1968) | 1.81 in (1970) |
| December 31 | 54.0°F (1966) | -20.0°F (1923) | 1.26 in (2019) |