December in Fort McMurray averages a daily high of -9.7°C with nights around -19.4°C. Expect roughly 8.7 wet days totalling 17mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Fort McMurray is May–August.
Based on FORT MCMURRAY CS, AB CA (13.2km), 1995–2024. 25 years of December data.