May in Kenosha averages a daily high of 17.5°C with nights around 8.3°C. Expect roughly 12.7 wet days totalling 107mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Kenosha is June–September.
Based on KENOSHA WWTP, WI US (2.7km), 1995–2024. 30 years of May data.