July in Harrisburg averages a daily high of 30°C with nights around 18.6°C. Expect roughly 11.3 wet days totalling 120.3mm. Generally workable, with some weather to plan around.
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 July data.