December in Tacoma averages a daily high of 8.5°C with nights around 2.9°C. Expect roughly 21.1 wet days totalling 167.1mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Tacoma is July–September.
Based on TACOMA NUMBER 1, WA US (2.5km), 1995–2024. 27 years of December data.