April in Saint Joseph averages a daily high of 19.1°C with nights around 5.5°C. Expect roughly 10.5 wet days totalling 90.4mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Saint Joseph is April–May.
Based on ST JOSEPH ROSECRANS MEMORIAL AIRPORT, MO US (5.4km), 1995–2024. 27 years of April data.