January in Granby averages a daily high of -4.3°C with nights around -12.9°C. Expect roughly 16.7 wet days totalling 88.5mm. A hard month to visit for comfort alone.
Across the year, the best time to visit Granby is May–September.
Based on GRANBY, QC CA (2.2km), 1995–2024. 27 years of January data.