April in Pontiac averages a daily high of 13.6°C with nights around 2°C. Expect roughly 11.2 wet days totalling 69.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Pontiac is May–September.
Based on PONTIAC WWTP, MI US (2.9km), 1995–2024. 15 years of April data.