December weather in Cascade Locks, OR
The average temperature in Cascade Locks in December is 37.8°F (32.7°F–42.8°F). Average precipitation: inches.
December is a winter month in Cascade Locks, and is cooler than the annual average of 52.7°F. Daily temperatures swing about 10.1°F between overnight low and afternoon high. Daylight averages about 8h 30m. For travel, December is cold.
Avg High
42.8°F
Avg Low
32.7°F
Precipitation
in
Daylight
8h 30m
December records in Cascade Locks
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| December 1 | 59.0°F (2021) | 18.0°F (1896) | 2.36 in (1901) |
| December 2 | 64.0°F (2021) | 23.0°F (1931) | 3.98 in (2013) |
| December 3 | 60.1°F (1918) | 23.0°F (1919) | 3.55 in (1941) |
| December 4 | 59.0°F (1918) | 21.9°F (1919) | 2.32 in (2023) |
| December 5 | 59.0°F (1938) | 19.0°F (2013) | 2.35 in (1915) |
| December 6 | 59.0°F (1923) | 19.0°F (1919) | 5.01 in (1933) |
| December 7 | 62.1°F (2023) | 19.9°F (1909) | 2.46 in (2015) |
| December 8 | 60.1°F (2015) | 8.1°F (2013) | 2.83 in (2015) |
| December 9 | 66.0°F (2015) | 10.9°F (2013) | 3.70 in (2025) |
| December 10 | 61.0°F (2025) | 9.0°F (1932) | 2.73 in (2023) |
| December 11 | 62.1°F (2025) | 7.0°F (1919) | 3.72 in (1946) |
| December 12 | 62.1°F (1921) | -5.1°F (1919) | 3.50 in (1946) |
| December 13 | 61.0°F (2025) | 12.0°F (1922) | 2.87 in (1917) |
| December 14 | 60.1°F (1918) | 9.0°F (1922) | 2.64 in (1929) |
| December 15 | 57.9°F (1939) | 9.0°F (1922) | 2.09 in (1939) |
| December 16 | 60.1°F (2025) | 8.1°F (1922) | 1.78 in (1939) |
| December 17 | 59.0°F (1917) | 9.0°F (1924) | 3.20 in (1917) |
| December 18 | 63.0°F (1917) | 6.1°F (1924) | 2.98 in (2015) |
| December 19 | 66.0°F (1917) | 7.0°F (1924) | 5.13 in (2025) |
| December 20 | 59.0°F (2019) | 10.0°F (1924) | 3.02 in (2020) |
| December 21 | 63.0°F (1933) | 10.9°F (1924) | 3.70 in (2014) |
| December 22 | 60.1°F (1933) | 10.0°F (1924) | 3.96 in (1933) |
| December 23 | 59.0°F (1925) | 10.0°F (1924) | 2.42 in (1936) |
| December 24 | 57.0°F (1925) | 6.1°F (1924) | 2.70 in (1902) |
| December 25 | 55.0°F (1950) | 5.0°F (1924) | 2.05 in (1907) |
| December 26 | 54.0°F (1901) | 1.9°F (1924) | 2.75 in (1928) |
| December 27 | 60.1°F (1917) | 15.1°F (1924) | 2.70 in (1942) |
| December 28 | 62.1°F (1937) | 21.0°F (1924) | 3.58 in (1945) |
| December 29 | 64.0°F (1917) | 21.0°F (1916) | 3.37 in (1912) |
| December 30 | 57.9°F (1920) | 16.0°F (1927) | 1.95 in (1942) |
| December 31 | 55.0°F (1917) | 9.0°F (1927) | 2.15 in (1922) |