April in Pittsburgh averages a daily high of 17.6°C with nights around 4.6°C. Expect roughly 12.5 wet days totalling 83.1mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Pittsburgh is May–June.
Based on EMSWORTH L D OHIO RIVER, PA US (10.6km), 1995–2024. 29 years of April data.