October in Davenport averages a daily high of 18°C with nights around 7.8°C. Expect roughly 9.9 wet days totalling 76.3mm. 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. 28 years of October data.