June in Mount Vernon averages a daily high of 27.1°C with nights around 18.5°C. Expect roughly 10.8 wet days totalling 100.5mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Mount Vernon is May–June.
Based on LAGUARDIA AIRPORT, NY US (15.3km), 1995–2024. 30 years of June data.