June in Harrisburg averages a daily high of 27.3°C with nights around 16°C. Expect roughly 11.7 wet days totalling 114.6mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Harrisburg is May–June.
Based on HARRISBURG 1 NE, PA US (1.5km), 1995–2024. 26 years of June data.