June in Jacksonville averages a daily high of 30.3°C with nights around 20.2°C. Expect roughly 11.9 wet days totalling 131mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Jacksonville is March–May.
Based on NEW RIVER MCAF, NC US (5.2km), 1995–2024. 27 years of June data.