April in Madison averages a daily high of 14.3°C with nights around 1.5°C. Expect roughly 11.2 wet days totalling 102.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Madison is June–September.
Based on UW ARBORETUM MADISON, WI US (4.2km), 1995–2024. 30 years of April data.