Monthly Rainfall and Snowfall Averages Season Key Characteristics Average High Average Low Winter (Dec-Feb) Snowy and cold, frequent whiteouts 44°F (7°C) 21°F (-6°C) Spring (Mar-May) Rapid warming, blooming wildflowers 58°F (14°C) 32°F (0°C) Summer (Jun-Aug) Mild days, intense monsoon storms 75°F (24°C) 48°F (9°C) Autumn (Sep-Nov) Clear skies, vibrant fall colors 68°F (20°C) 33°F (1°C) The Challenge of Wind and Microclimates Travelers quickly learn that wind is a constant companion in Flagstaff. Winter precipitation arrives primarily as snow, fed by Pacific storm systems that track north of the Mogollon Rim.
Flagstaff Arizona Weather Year Round: Seasonal Patterns and Temperature Swings
Spring and autumn serve as short but beautiful transition periods, offering the clearest skies and most comfortable outdoor conditions for hiking and exploration. The summer months, however, are dominated by the North American Monsoon, a seasonal shift that pulls humid air from the Gulf of Mexico.
Summer highs typically hover in the pleasant mid-70s Fahrenheit, with overnight lows often dipping into the 40s or 50s, providing a crisp respite from the scorching temperatures found in southern Arizona. Flagstaff, Arizona exists in a climate zone that sharply contrasts with the low desert surrounding Phoenix and Tucson.
Flagstaff Arizona Weather Year Round Seasonal Patterns and Temperature Swings
Impact on Daily Life and Infrastructure. Seasonal Temperature Variations and Weather Patterns The most defining feature of the Flagstaff climate is its dramatic seasonal temperature swing.
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