August in La Crosse averages a daily high of 25.5°C with nights around 15.8°C. Expect roughly 10.3 wet days totalling 113.5mm. Comfortable conditions for being outdoors all day.
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 August data.