June in Flagstaff averages a daily high of 26.3°C with nights around 6.1°C. Rain is rare — about 2.5 wet days and 9mm across the month. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Flagstaff is May–June.
Based on FLAGSTAFF AIRPORT, AZ US (6.1km), 1995–2024. 30 years of June data.