April in Davenport averages a daily high of 16.6°C with nights around 5.4°C. Expect roughly 12.2 wet days totalling 98.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Davenport is August–September.
Based on ROCK ISLAND LOCK AND DAM 15, IL US (1.2km), 1995–2024. 30 years of April data.