October in Granby averages a daily high of 13°C with nights around 4.8°C. Expect roughly 13.4 wet days totalling 113.5mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Granby is May–September.
Based on GRANBY, QC CA (2.2km), 1995–2024. 23 years of October data.