June in Rapid City averages a daily high of 25.1°C with nights around 12.8°C. Expect roughly 13 wet days totalling 82.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Rapid City is September.
Based on RAPID CITY WEATHER FORECAST OFFICE, SD US (1.8km), 1995–2024. 28 years of June data.