December in Medicine Hat averages a daily high of -2°C with nights around -12.9°C. Expect roughly 6.8 wet days totalling 12.8mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Medicine Hat is July–September.
Based on MEDICINE HAT RCS, AB CA (2.9km), 1995–2024. 23 years of December data.