May in La Crosse averages a daily high of 19.4°C with nights around 9°C. Expect roughly 14.7 wet days totalling 128mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit La Crosse is June–September.
Based on LA CROSSE WEATHER FORECAST OFFICE, WI US (4.5km), 1995–2024. 25 years of May data.