June in Blackburn averages a daily high of 19°C with nights around 10.6°C. Expect roughly 13.5 wet days totalling 74.8mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Blackburn is May–September.
Based on PRESTON MOOR PARK, UK (14.7km), 1995–2024. 23 years of June data.