December weather in Sedro-Woolley, WA
The average temperature in Sedro-Woolley in December is 39.5°F (34.2°F–44.8°F). Average precipitation: 5.45 inches. Average snowfall is 3.7 inches.
December is a winter month in Sedro-Woolley, and is cooler than the annual average of 51.3°F. Daily temperatures swing about 10.6°F between overnight low and afternoon high. Expect about 21 days with precipitation. Daylight averages about 8h 6m. For travel, December is a wet month.
Avg High
44.8°F
Avg Low
34.2°F
Precipitation
5.45 in
Snow
3.7 in
December records in Sedro-Woolley
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 61.0°F (1903) | 12.9°F (1985) | 2.08 in (1927) |
| December 2 | 62.1°F (1941) | 12.0°F (1985) | 2.10 in (1977) |
| December 3 | 61.0°F (1896) | 18.0°F (1909) | 1.31 in (1975) |
| December 4 | 72.0°F (1939) | 10.9°F (1919) | 1.22 in (1925) |
| December 5 | 73.9°F (1939) | 18.0°F (1908) | 1.49 in (1971) |
| December 6 | 61.0°F (1944) | 14.0°F (1956) | 1.03 in (1911) |
| December 7 | 62.1°F (2024) | 12.0°F (1972) | 1.74 in (1896) |
| December 8 | 64.9°F (1896) | 10.0°F (1972) | 1.14 in (1975) |
| December 9 | 64.9°F (1896) | 8.1°F (1932) | 1.87 in (1990) |
| December 10 | 66.9°F (1900) | 8.1°F (1972) | 1.62 in (2023) |
| December 11 | 60.1°F (2004) | 9.0°F (1922) | 1.77 in (1921) |
| December 12 | 62.1°F (1960) | 1.9°F (1922) | 2.00 in (1909) |
| December 13 | 64.0°F (1900) | 9.0°F (1922) | 2.21 in (1917) |
| December 14 | 63.0°F (2002) | 12.0°F (1932) | 2.00 in (1979) |
| December 15 | 64.9°F (1900) | 12.9°F (1922) | 1.68 in (1959) |
| December 16 | 62.1°F (1900) | 3.0°F (1964) | 1.70 in (1903) |
| December 17 | 61.0°F (1923) | 6.1°F (1964) | 1.39 in (1933) |
| December 18 | 60.1°F (1923) | 8.1°F (1924) | 1.77 in (2017) |
| December 19 | 60.1°F (1959) | 10.0°F (1924) | 1.80 in (1932) |
| December 20 | 62.1°F (1940) | 9.0°F (2008) | 1.99 in (1939) |
| December 21 | 61.0°F (1950) | 10.9°F (1990) | 1.61 in (2019) |
| December 22 | 60.1°F (1940) | 9.0°F (1998) | 1.54 in (1925) |
| December 23 | 60.1°F (1963) | 9.0°F (1983) | 1.70 in (1910) |
| December 24 | 64.9°F (1963) | 0.0°F (2023) | 1.80 in (1897) |
| December 25 | 66.9°F (2005) | 8.1°F (1924) | 2.45 in (1967) |
| December 26 | 62.1°F (1980) | 16.0°F (1948) | 1.92 in (1972) |
| December 27 | 64.9°F (1980) | 7.0°F (2021) | 2.43 in (1949) |
| December 28 | 59.0°F (1896) | 1.0°F (1968) | 1.57 in (1924) |
| December 29 | 60.1°F (1917) | 1.0°F (1968) | 1.36 in (1917) |
| December 30 | 62.1°F (1963) | 3.9°F (1968) | 1.67 in (1938) |
| December 31 | 61.0°F (1917) | 3.9°F (1951) | 1.33 in (1993) |