July in Terrebonne averages a daily high of 26.8°C with nights around 16.3°C. Expect roughly 10.4 wet days totalling 95.6mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Terrebonne is May–September.
Based on RIVIERE DES PRAIRIES, QC CA (11.4km), 1995–2024. 20 years of July data.