December in Red Deer averages a daily high of -4.5°C with nights around -16.2°C. Expect roughly 8.5 wet days totalling 12.9mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Red Deer is May–September.
Based on LACOMBE CDA 2, AB CA (20.7km), 1995–2024. 29 years of December data.