April in Caledon averages a daily high of 11.9°C with nights around -0.4°C. Expect roughly 11.4 wet days totalling 72mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Caledon is May–September.
Based on GEORGETOWN WWTP, ON CA (27.3km), 1995–2024. 20 years of April data.